Merge branch 'main' into investigate-issue-5772

Release process change

.github/ISSUE_TEMPLATE/new_feature_issue.md

@@ -1,27 +1,29 @@
 ---
-name: New sprint issue
-about: ⚠️ Should only be used by the engine team ⚠️
+name: New feature issue
+about: ⚠️ Should only be used by the internal Meili team ⚠️
 title: ''
-labels: 'missing usage in PRD, impacts docs'
+labels: 'impacts docs, impacts integrations'
 assignees: ''
 
 ---
 
 Related product team resources: [PRD]() (_internal only_)
-Related product discussion:
-
-## Motivation
-
-<!---Copy/paste the information in PRD or briefly detail the product motivation. Ask product team if any hesitation.-->
 
 ## Usage
 
 <!---Link to the public part of the PRD, or to the related product discussion for experimental features-->
 
+TBD
+
 ## TODO
 
 <!---If necessary, create a list with technical/product steps-->
 
+### Are you modifying a database?
+
+- [ ] If not, add the `no db change` label to your PR, and you're good to merge.
+- [ ] If yes, add the `db change` label to your PR. You'll receive a message explaining you what to do.
+
 ### Reminders when modifying the API
 
 - [ ] Update the openAPI file with utoipa:
@@ -50,5 +52,5 @@ Related product discussion:
 
 ## Impacted teams
 
-<!---Ping the related teams. Ask for the engine manager if any hesitation-->
-<!---@meilisearch/docs-team when there is any API change, e.g. settings addition-->
+<!---Ping the related teams. Ask on Slack if any hesitation-->
+<!---@meilisearch/docs-team and @meilisearch/integration-team when there is any API change, e.g. settings addition-->

.github/pull_request_template.md

@@ -0,0 +1,16 @@
+## Related issue
+
+Fixes #...
+
+## Requirements
+
+⚠️ Ensure the following requirements before merging ⚠️
+- [] Automated tests have been added.
+- [] If some tests cannot be automated, manual rigorous tests should be applied.
+- [] ⚠️ If there is any change in the DB: 
+    - [ ] Test that any impacted DB still works as expected after using `--experimental-dumpless-upgrade` on a DB created with the last released Meilisearch
+    - [ ] Test that during the upgrade, **search is still available** (artificially make the upgrade longer if needed)
+    - [ ] Set the `db change` label.
+- [] If necessary, the feature have been tested in the Cloud production environment (with [prototypes](./documentation/prototypes.md)) and the Cloud UI is ready.
+- [] If necessary, the [documentation](https://github.com/meilisearch/documentation) related to the implemented feature in the PR is ready.
+- [] If necessary, the [integrations](https://github.com/meilisearch/integration-guides) related to the implemented feature in the PR are ready.

.github/release-draft-template.yml

@@ -0,0 +1,23 @@
+name-template: 'v$RESOLVED_VERSION'
+tag-template: 'v$RESOLVED_VERSION'
+exclude-labels:
+  - 'skip changelog'
+version-resolver:
+  major:
+    labels:
+      - 'breaking-change'
+  minor:
+    labels:
+      - 'enhancement'
+  default: patch
+template: |
+  $CHANGES
+
+  Thanks again to $CONTRIBUTORS! 🎉
+no-changes-template: 'Changes are coming soon 😎'
+sort-direction: 'ascending'
+replacers:
+  - search: '/(?:and )?@dependabot-preview(?:\[bot\])?,?/g'
+    replace: ''
+  - search: '/(?:and )?@dependabot(?:\[bot\])?,?/g'
+    replace: ''

.github/templates/dependency-issue.md

@@ -0,0 +1,22 @@
+This issue is about updating Meilisearch dependencies:
+  - [ ] Update Meilisearch dependencies with the help of `cargo +nightly udeps --all-targets` (remove unused dependencies) and `cargo upgrade` (upgrade dependencies versions) - ⚠️ Some repositories may contain subdirectories (like heed, charabia, or deserr). Take care of updating these in the main crate as well. This won't be done automatically by `cargo upgrade`.
+    - [ ] [deserr](https://github.com/meilisearch/deserr)
+    - [ ] [charabia](https://github.com/meilisearch/charabia/)
+    - [ ] [heed](https://github.com/meilisearch/heed/)
+    - [ ] [roaring-rs](https://github.com/RoaringBitmap/roaring-rs/)
+    - [ ] [obkv](https://github.com/meilisearch/obkv)
+    - [ ] [grenad](https://github.com/meilisearch/grenad/)
+    - [ ] [arroy](https://github.com/meilisearch/arroy/)
+    - [ ] [segment](https://github.com/meilisearch/segment)
+    - [ ] [bumparaw-collections](https://github.com/meilisearch/bumparaw-collections)
+    - [ ] [bbqueue](https://github.com/meilisearch/bbqueue)
+    - [ ] Finally, [Meilisearch](https://github.com/meilisearch/MeiliSearch)
+  - [ ] If new Rust versions have been released, update the minimal Rust version in use at Meilisearch:
+    - [ ] in this [GitHub Action file](https://github.com/meilisearch/meilisearch/blob/main/.github/workflows/test-suite.yml), by changing the `toolchain` field of the `rustfmt` job to the latest available nightly (of the day before or the current day).
+    - [ ] in every [GitHub Action files](https://github.com/meilisearch/meilisearch/blob/main/.github/workflows), by changing all the `dtolnay/rust-toolchain@` references to use the latest stable version.
+    - [ ] in this [`rust-toolchain.toml`](https://github.com/meilisearch/meilisearch/blob/main/rust-toolchain.toml), by changing the `channel` field to the latest stable version.
+    - [ ] in the [Dockerfile](https://github.com/meilisearch/meilisearch/blob/main/Dockerfile), by changing the base image to `rust:<target_rust_version>-alpine<alpine_version>`. Check that the image exists on [Dockerhub](https://hub.docker.com/_/rust/tags?page=1&name=alpine). Also, build and run the image to check everything still works!
+
+⚠️ This issue should be prioritized to avoid any deprecation and vulnerability issues.
+
+The GitHub action dependencies are managed by [Dependabot](https://github.com/meilisearch/meilisearch/blob/main/.github/dependabot.yml), so no need to update them when solving this issue.

.github/workflows/bench-manual.yml

@@ -1,28 +1,27 @@
 name: Bench (manual)
 
 on:
-    workflow_dispatch:
-        inputs:
-            workload:
-                description: 'The path to the workloads to execute (workloads/...)'
-                required: true
-                default: 'workloads/movies.json'
+  workflow_dispatch:
+    inputs:
+      workload:
+        description: "The path to the workloads to execute (workloads/...)"
+        required: true
+        default: "workloads/movies.json"
 
 env:
-    WORKLOAD_NAME: ${{ github.event.inputs.workload }}
+  WORKLOAD_NAME: ${{ github.event.inputs.workload }}
 
 jobs:
-    benchmarks:
-        name: Run and upload benchmarks
-        runs-on: benchmarks
-        timeout-minutes: 180 # 3h
-        steps:
-            - uses: actions/checkout@v3
-            - uses: dtolnay/rust-toolchain@1.81
-              with:
-                profile: minimal
-
-            - name: Run benchmarks - workload ${WORKLOAD_NAME} - branch ${{ github.ref }} - commit ${{ github.sha }}
-              run: |
-               cargo xtask bench --api-key "${{ secrets.BENCHMARK_API_KEY }}" --dashboard-url "${{ vars.BENCHMARK_DASHBOARD_URL }}" --reason "Manual [Run #${{ github.run_id }}](https://github.com/meilisearch/meilisearch/actions/runs/${{ github.run_id }})" -- ${WORKLOAD_NAME}
+  benchmarks:
+    name: Run and upload benchmarks
+    runs-on: benchmarks
+    timeout-minutes: 180 # 3h
+    steps:
+      - uses: actions/checkout@v3
+      - uses: dtolnay/rust-toolchain@1.85
+        with:
+          profile: minimal
 
+      - name: Run benchmarks - workload ${WORKLOAD_NAME} - branch ${{ github.ref }} - commit ${{ github.sha }}
+        run: |
+          cargo xtask bench --api-key "${{ secrets.BENCHMARK_API_KEY }}" --dashboard-url "${{ vars.BENCHMARK_DASHBOARD_URL }}" --reason "Manual [Run #${{ github.run_id }}](https://github.com/meilisearch/meilisearch/actions/runs/${{ github.run_id }})" -- ${WORKLOAD_NAME}

.github/workflows/bench-pr.yml

@@ -1,82 +1,82 @@
 name: Bench (PR)
 on:
-    issue_comment:
-        types: [created]
+  issue_comment:
+    types: [created]
 
 permissions:
-    issues: write
+  issues: write
 
 env:
-    GH_TOKEN: ${{ secrets.MEILI_BOT_GH_PAT }}
+  GH_TOKEN: ${{ secrets.MEILI_BOT_GH_PAT }}
 
 jobs:
-    run-benchmarks-on-comment:
-      if: startsWith(github.event.comment.body, '/bench')
-      name: Run and upload benchmarks
-      runs-on: benchmarks
-      timeout-minutes: 180 # 3h
-      steps:
-        - name: Check permissions
-          id: permission
-          env:
-            PR_AUTHOR: ${{github.event.issue.user.login }}
-            COMMENT_AUTHOR: ${{github.event.comment.user.login }}
-            REPOSITORY: ${{github.repository}}
-            PR_ID: ${{github.event.issue.number}}
-          run: |
-            PR_REPOSITORY=$(gh api /repos/"$REPOSITORY"/pulls/"$PR_ID" --jq .head.repo.full_name)
-            if $(gh api /repos/"$REPOSITORY"/collaborators/"$PR_AUTHOR"/permission --jq .user.permissions.push)
-            then
-              echo "::notice title=Authentication success::PR author authenticated"
-            else
-              echo "::error title=Authentication error::PR author doesn't have push permission on this repository"
-              exit 1
-            fi
-            if $(gh api /repos/"$REPOSITORY"/collaborators/"$COMMENT_AUTHOR"/permission --jq .user.permissions.push)
-            then
-              echo "::notice title=Authentication success::Comment author authenticated"
-            else
-              echo "::error title=Authentication error::Comment author doesn't have push permission on this repository"
-              exit 1
-            fi
-            if [ "$PR_REPOSITORY" = "$REPOSITORY" ]
-            then
-              echo "::notice title=Authentication success::PR started from main repository"
-            else
-              echo "::error title=Authentication error::PR started from a fork"
-              exit 1
-            fi
+  run-benchmarks-on-comment:
+    if: startsWith(github.event.comment.body, '/bench')
+    name: Run and upload benchmarks
+    runs-on: benchmarks
+    timeout-minutes: 180 # 3h
+    steps:
+      - name: Check permissions
+        id: permission
+        env:
+          PR_AUTHOR: ${{github.event.issue.user.login }}
+          COMMENT_AUTHOR: ${{github.event.comment.user.login }}
+          REPOSITORY: ${{github.repository}}
+          PR_ID: ${{github.event.issue.number}}
+        run: |
+          PR_REPOSITORY=$(gh api /repos/"$REPOSITORY"/pulls/"$PR_ID" --jq .head.repo.full_name)
+          if $(gh api /repos/"$REPOSITORY"/collaborators/"$PR_AUTHOR"/permission --jq .user.permissions.push)
+          then
+            echo "::notice title=Authentication success::PR author authenticated"
+          else
+            echo "::error title=Authentication error::PR author doesn't have push permission on this repository"
+            exit 1
+          fi
+          if $(gh api /repos/"$REPOSITORY"/collaborators/"$COMMENT_AUTHOR"/permission --jq .user.permissions.push)
+          then
+            echo "::notice title=Authentication success::Comment author authenticated"
+          else
+            echo "::error title=Authentication error::Comment author doesn't have push permission on this repository"
+            exit 1
+          fi
+          if [ "$PR_REPOSITORY" = "$REPOSITORY" ]
+          then
+            echo "::notice title=Authentication success::PR started from main repository"
+          else
+            echo "::error title=Authentication error::PR started from a fork"
+            exit 1
+          fi
 
-        - name: Check for Command
-          id: command
-          uses: xt0rted/slash-command-action@v2
-          with:
-              command: bench
-              reaction-type: "rocket"
-              repo-token: ${{ env.GH_TOKEN }}
+      - name: Check for Command
+        id: command
+        uses: xt0rted/slash-command-action@v2
+        with:
+          command: bench
+          reaction-type: "rocket"
+          repo-token: ${{ env.GH_TOKEN }}
 
-        - uses: xt0rted/pull-request-comment-branch@v3
-          id: comment-branch
-          with:
-            repo_token: ${{ env.GH_TOKEN }}
+      - uses: xt0rted/pull-request-comment-branch@v3
+        id: comment-branch
+        with:
+          repo_token: ${{ env.GH_TOKEN }}
 
-        - uses: actions/checkout@v3
-          if: success()
-          with:
-            fetch-depth: 0 # fetch full history to be able to get main commit sha
-            ref: ${{ steps.comment-branch.outputs.head_ref }}
+      - uses: actions/checkout@v3
+        if: success()
+        with:
+          fetch-depth: 0 # fetch full history to be able to get main commit sha
+          ref: ${{ steps.comment-branch.outputs.head_ref }}
 
-        - uses: dtolnay/rust-toolchain@1.81
-          with:
-            profile: minimal
+      - uses: dtolnay/rust-toolchain@1.85
+        with:
+          profile: minimal
 
-        - name: Run benchmarks on PR ${{ github.event.issue.id }}
-          run: |
-            cargo xtask bench --api-key "${{ secrets.BENCHMARK_API_KEY }}" \
-               --dashboard-url "${{ vars.BENCHMARK_DASHBOARD_URL }}" \
-               --reason "[Comment](${{ github.event.comment.html_url }}) on [#${{ github.event.issue.number }}](${{ github.event.issue.html_url }})" \
-               -- ${{ steps.command.outputs.command-arguments }} > benchlinks.txt
+      - name: Run benchmarks on PR ${{ github.event.issue.id }}
+        run: |
+          cargo xtask bench --api-key "${{ secrets.BENCHMARK_API_KEY }}" \
+             --dashboard-url "${{ vars.BENCHMARK_DASHBOARD_URL }}" \
+             --reason "[Comment](${{ github.event.comment.html_url }}) on [#${{ github.event.issue.number }}](${{ github.event.issue.html_url }})" \
+             -- ${{ steps.command.outputs.command-arguments }} > benchlinks.txt
 
-        - name: Send comment in PR
-          run: |
-            gh pr comment ${{github.event.issue.number}} --body-file benchlinks.txt
+      - name: Send comment in PR
+        run: |
+          gh pr comment ${{github.event.issue.number}} --body-file benchlinks.txt

.github/workflows/bench-push-indexing.yml

@@ -1,23 +1,22 @@
 name: Indexing bench (push)
 
 on:
-    push:
-        branches:
-            - main
+  push:
+    branches:
+      - main
 
 jobs:
-    benchmarks:
-        name: Run and upload benchmarks
-        runs-on: benchmarks
-        timeout-minutes: 180 # 3h
-        steps:
-          - uses: actions/checkout@v3
-          - uses: dtolnay/rust-toolchain@1.81
-            with:
-              profile: minimal
-
-          # Run benchmarks
-          - name: Run benchmarks - Dataset ${BENCH_NAME} - Branch main - Commit ${{ github.sha }}
-            run: |
-              cargo xtask bench --api-key "${{ secrets.BENCHMARK_API_KEY }}" --dashboard-url "${{ vars.BENCHMARK_DASHBOARD_URL }}" --reason "Push on `main` [Run #${{ github.run_id }}](https://github.com/meilisearch/meilisearch/actions/runs/${{ github.run_id }})" -- workloads/*.json
+  benchmarks:
+    name: Run and upload benchmarks
+    runs-on: benchmarks
+    timeout-minutes: 180 # 3h
+    steps:
+      - uses: actions/checkout@v3
+      - uses: dtolnay/rust-toolchain@1.85
+        with:
+          profile: minimal
 
+      # Run benchmarks
+      - name: Run benchmarks - Dataset ${BENCH_NAME} - Branch main - Commit ${{ github.sha }}
+        run: |
+          cargo xtask bench --api-key "${{ secrets.BENCHMARK_API_KEY }}" --dashboard-url "${{ vars.BENCHMARK_DASHBOARD_URL }}" --reason "Push on `main` [Run #${{ github.run_id }}](https://github.com/meilisearch/meilisearch/actions/runs/${{ github.run_id }})" -- workloads/*.json

.github/workflows/benchmarks-manual.yml

@@ -4,9 +4,9 @@ on:
   workflow_dispatch:
     inputs:
       dataset_name:
-        description: 'The name of the dataset used to benchmark (search_songs, search_wiki, search_geo or indexing)'
+        description: "The name of the dataset used to benchmark (search_songs, search_wiki, search_geo or indexing)"
         required: false
-        default: 'search_songs'
+        default: "search_songs"
 
 env:
   BENCH_NAME: ${{ github.event.inputs.dataset_name }}
@@ -18,7 +18,7 @@ jobs:
     timeout-minutes: 4320 # 72h
     steps:
       - uses: actions/checkout@v3
-      - uses: dtolnay/rust-toolchain@1.81
+      - uses: dtolnay/rust-toolchain@1.85
         with:
           profile: minimal
 
@@ -67,7 +67,7 @@ jobs:
           out_dir: critcmp_results
 
       # Helper
-      - name: 'README: compare with another benchmark'
+      - name: "README: compare with another benchmark"
         run: |
           echo "${{ steps.file.outputs.basename }}.json has just been pushed."
           echo 'How to compare this benchmark with another one?'

.github/workflows/benchmarks-pr.yml

@@ -44,7 +44,7 @@ jobs:
             exit 1
           fi
 
-      - uses: dtolnay/rust-toolchain@1.81
+      - uses: dtolnay/rust-toolchain@1.85
         with:
           profile: minimal
 

.github/workflows/benchmarks-push-indexing.yml

@@ -16,7 +16,7 @@ jobs:
     timeout-minutes: 4320 # 72h
     steps:
       - uses: actions/checkout@v3
-      - uses: dtolnay/rust-toolchain@1.81
+      - uses: dtolnay/rust-toolchain@1.85
         with:
           profile: minimal
 
@@ -69,7 +69,7 @@ jobs:
         run: telegraf --config https://eu-central-1-1.aws.cloud2.influxdata.com/api/v2/telegrafs/08b52e34a370b000 --once --debug
 
       # Helper
-      - name: 'README: compare with another benchmark'
+      - name: "README: compare with another benchmark"
         run: |
           echo "${{ steps.file.outputs.basename }}.json has just been pushed."
           echo 'How to compare this benchmark with another one?'

.github/workflows/benchmarks-push-search-geo.yml

@@ -15,7 +15,7 @@ jobs:
     runs-on: benchmarks
     steps:
       - uses: actions/checkout@v3
-      - uses: dtolnay/rust-toolchain@1.81
+      - uses: dtolnay/rust-toolchain@1.85
         with:
           profile: minimal
 
@@ -68,7 +68,7 @@ jobs:
         run: telegraf --config https://eu-central-1-1.aws.cloud2.influxdata.com/api/v2/telegrafs/08b52e34a370b000 --once --debug
 
       # Helper
-      - name: 'README: compare with another benchmark'
+      - name: "README: compare with another benchmark"
         run: |
           echo "${{ steps.file.outputs.basename }}.json has just been pushed."
           echo 'How to compare this benchmark with another one?'

.github/workflows/benchmarks-push-search-songs.yml

@@ -15,7 +15,7 @@ jobs:
     runs-on: benchmarks
     steps:
       - uses: actions/checkout@v3
-      - uses: dtolnay/rust-toolchain@1.81
+      - uses: dtolnay/rust-toolchain@1.85
         with:
           profile: minimal
 
@@ -68,7 +68,7 @@ jobs:
         run: telegraf --config https://eu-central-1-1.aws.cloud2.influxdata.com/api/v2/telegrafs/08b52e34a370b000 --once --debug
 
       # Helper
-      - name: 'README: compare with another benchmark'
+      - name: "README: compare with another benchmark"
         run: |
           echo "${{ steps.file.outputs.basename }}.json has just been pushed."
           echo 'How to compare this benchmark with another one?'

.github/workflows/benchmarks-push-search-wiki.yml

@@ -15,7 +15,7 @@ jobs:
     runs-on: benchmarks
     steps:
       - uses: actions/checkout@v3
-      - uses: dtolnay/rust-toolchain@1.81
+      - uses: dtolnay/rust-toolchain@1.85
         with:
           profile: minimal
 
@@ -68,7 +68,7 @@ jobs:
         run: telegraf --config https://eu-central-1-1.aws.cloud2.influxdata.com/api/v2/telegrafs/08b52e34a370b000 --once --debug
 
       # Helper
-      - name: 'README: compare with another benchmark'
+      - name: "README: compare with another benchmark"
         run: |
           echo "${{ steps.file.outputs.basename }}.json has just been pushed."
           echo 'How to compare this benchmark with another one?'

.github/workflows/check-valid-milestone.yml

@@ -1,100 +0,0 @@
-name: PR Milestone Check
-
-on:
-  pull_request:
-    types: [opened, reopened, edited, synchronize, milestoned, demilestoned]
-    branches:
-      - "main"
-      - "release-v*.*.*"
-
-jobs:
-  check-milestone:
-    name: Check PR Milestone
-    runs-on: ubuntu-latest
-
-    steps:
-      - name: Checkout code
-        uses: actions/checkout@v3
-
-      - name: Validate PR milestone
-        uses: actions/github-script@v6
-        with:
-          github-token: ${{ secrets.GITHUB_TOKEN }}
-          script: |
-            // Get PR number directly from the event payload
-            const prNumber = context.payload.pull_request.number;
-
-            // Get PR details
-            const { data: prData } = await github.rest.pulls.get({
-              owner: 'meilisearch',
-              repo: 'meilisearch',
-              pull_number: prNumber
-            });
-
-            // Get base branch name
-            const baseBranch = prData.base.ref;
-            console.log(`Base branch: ${baseBranch}`);
-
-            // Get PR milestone
-            const prMilestone = prData.milestone;
-            if (!prMilestone) {
-              core.setFailed('PR must have a milestone assigned');
-              return;
-            }
-            console.log(`PR milestone: ${prMilestone.title}`);
-
-            // Validate milestone format: vx.y.z
-            const milestoneRegex = /^v\d+\.\d+\.\d+$/;
-            if (!milestoneRegex.test(prMilestone.title)) {
-              core.setFailed(`Milestone "${prMilestone.title}" does not follow the required format vx.y.z`);
-              return;
-            }
-
-            // For main branch PRs, check if the milestone is the highest one
-            if (baseBranch === 'main') {
-              // Get all milestones
-              const { data: milestones } = await github.rest.issues.listMilestones({
-                owner: 'meilisearch',
-                repo: 'meilisearch',
-                state: 'open',
-                sort: 'due_on',
-                direction: 'desc'
-              });
-
-              // Sort milestones by version number (vx.y.z)
-              const sortedMilestones = milestones
-                .filter(m => milestoneRegex.test(m.title))
-                .sort((a, b) => {
-                  const versionA = a.title.substring(1).split('.').map(Number);
-                  const versionB = b.title.substring(1).split('.').map(Number);
-
-                  // Compare major version
-                  if (versionA[0] !== versionB[0]) return versionB[0] - versionA[0];
-                  // Compare minor version
-                  if (versionA[1] !== versionB[1]) return versionB[1] - versionA[1];
-                  // Compare patch version
-                  return versionB[2] - versionA[2];
-                });
-
-              if (sortedMilestones.length === 0) {
-                core.setFailed('No valid milestones found in the repository. Please create at least one milestone with the format vx.y.z');
-                return;
-              }
-
-              const highestMilestone = sortedMilestones[0];
-              console.log(`Highest milestone: ${highestMilestone.title}`);
-
-              if (prMilestone.title !== highestMilestone.title) {
-                core.setFailed(`PRs targeting the main branch must use the highest milestone (${highestMilestone.title}), but this PR uses ${prMilestone.title}`);
-                return;
-              }
-            } else {
-              // For release branches, the milestone should match the branch version
-              const branchVersion = baseBranch.substring(8); // remove 'release-'
-              if (prMilestone.title !== branchVersion) {
-                core.setFailed(`PRs targeting release branch "${baseBranch}" must use the matching milestone "${branchVersion}", but this PR uses "${prMilestone.title}"`);
-                return;
-              }
-            }
-
-            console.log('PR milestone validation passed!');

.github/workflows/db-change-comments.yml

@@ -0,0 +1,57 @@
+name: Comment when db change labels are added
+
+on:
+  pull_request:
+    types: [labeled]
+
+env:
+  MESSAGE: |
+    ### Hello, I'm a bot 🤖 
+
+    You are receiving this message because you declared that this PR make changes to the Meilisearch database.
+    Depending on the nature of the change, additional actions might be required on your part. The following sections detail the additional actions depending on the nature of the change, please copy the relevant section in the description of your PR, and make sure to perform the required actions.
+
+    Thank you for contributing to Meilisearch :heart:
+
+    ## This PR makes forward-compatible changes
+
+    *Forward-compatible changes are changes to the database such that databases created in an older version of Meilisearch are still valid in the new version of Meilisearch. They usually represent additive changes, like adding a new optional attribute or setting.*
+
+    - [ ] Detail the change to the DB format and why they are forward compatible
+    - [ ] Forward-compatibility: A database created before this PR and using the features touched by this PR was able to be opened by a Meilisearch produced by the code of this PR.
+
+
+    ## This PR makes breaking changes
+
+    *Breaking changes are changes to the database such that databases created in an older version of Meilisearch need changes to remain valid in the new version of Meilisearch. This typically happens when the way to store the data changed (change of database, new required key, etc). This can also happen due to breaking changes in the API of an experimental feature. ⚠️ This kind of changes are more difficult to achieve safely, so proceed with caution and test dumpless upgrade right before merging the PR.*
+
+    - [ ] Detail the changes to the DB format,
+        - [ ] which are compatible, and why
+        - [ ] which are not compatible, why, and how they will be fixed up in the upgrade
+     - [ ] /!\ Ensure all the read operations still work!
+        - If the change happened in milli, you may need to check the version of the database before doing any read operation
+        - If the change happened in the index-scheduler, make sure the new code can immediately read the old database
+        - If the change happened in the meilisearch-auth database, reach out to the team; we don't know yet how to handle these changes
+      - [ ] Write the code to go from the old database to the new one
+        - If the change happened in milli, the upgrade function should be written and called [here](https://github.com/meilisearch/meilisearch/blob/3fd86e8d76d7d468b0095d679adb09211ca3b6c0/crates/milli/src/update/upgrade/mod.rs#L24-L47)
+        - If the change happened in the index-scheduler, we've never done it yet, but the right place to do it should be [here](https://github.com/meilisearch/meilisearch/blob/3fd86e8d76d7d468b0095d679adb09211ca3b6c0/crates/index-scheduler/src/scheduler/process_upgrade/mod.rs#L13)
+      - [ ] Write an integration test [here](https://github.com/meilisearch/meilisearch/blob/main/crates/meilisearch/tests/upgrade/mod.rs) ensuring you can read the old database, upgrade to the new database, and read the new database as expected
+    
+
+jobs:
+  add-comment:
+    runs-on: ubuntu-latest
+    if: github.event.label.name == 'db change'
+    steps:
+      - name: Add comment
+        uses: actions/github-script@v7
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          script: |
+            const message = process.env.MESSAGE;
+            github.rest.issues.createComment({
+              issue_number: context.issue.number,
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              body: message
+            })

.github/workflows/db-change-missing.yml

@@ -0,0 +1,28 @@
+name: Check db change labels
+
+on:
+  pull_request:
+    types: [opened, synchronize, reopened, labeled, unlabeled]
+
+jobs:
+  check-labels:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+      - name: Check db change labels
+        id: check_labels
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: |
+          URL=/repos/meilisearch/meilisearch/pulls/${{ github.event.pull_request.number }}/labels
+          echo ${{ github.event.pull_request.number }}
+          echo $URL
+          LABELS=$(gh api -H "Accept: application/vnd.github+json" -H "X-GitHub-Api-Version: 2022-11-28" /repos/${{ github.repository }}/issues/${{ github.event.pull_request.number }}/labels -q .[].name)
+          echo "Labels: $LABELS"
+          if [[ ! "$LABELS" =~ "db change" && ! "$LABELS" =~ "no db change" ]]; then
+            echo "::error::Pull request must contain either the 'db change' or 'no db change' label."
+            exit 1
+          else
+            echo "The label is set"
+          fi

.github/workflows/dependency-issue.yml

@@ -15,7 +15,7 @@ jobs:
     steps:
     - uses: actions/checkout@v3
     - name: Download the issue template
-      run: curl -s https://raw.githubusercontent.com/meilisearch/engine-team/main/issue-templates/dependency-issue.md > $ISSUE_TEMPLATE
+      run: curl -s https://raw.githubusercontent.com/meilisearch/meilisearch/main/.github/templates/dependency-issue.md > $ISSUE_TEMPLATE
     - name: Create issue
       run: |
         gh issue create \

.github/workflows/flaky-tests.yml

@@ -3,7 +3,7 @@ name: Look for flaky tests
 on:
   workflow_dispatch:
   schedule:
-    - cron: "0 12 * * FRI" # Every Friday at 12:00PM
+    - cron: '0 4 * * *' # Every day at 4:00AM
 
 jobs:
   flaky:
@@ -17,7 +17,7 @@ jobs:
         run: |
           apt-get update && apt-get install -y curl
           apt-get install build-essential -y
-      - uses: dtolnay/rust-toolchain@1.81
+      - uses: dtolnay/rust-toolchain@1.85
       - name: Install cargo-flaky
         run: cargo install cargo-flaky
       - name: Run cargo flaky in the dumps

.github/workflows/fuzzer-indexing.yml

@@ -12,7 +12,7 @@ jobs:
     timeout-minutes: 4320 # 72h
     steps:
       - uses: actions/checkout@v3
-      - uses: dtolnay/rust-toolchain@1.81
+      - uses: dtolnay/rust-toolchain@1.85
         with:
           profile: minimal
 

.github/workflows/milestone-workflow.yml

@@ -1,192 +0,0 @@
-name: Milestone's workflow
-
-# /!\ No git flow are handled here
-
-# For each Milestone created (not opened!), and if the release is NOT a patch release (only the patch changed)
-# - the roadmap issue is created, see https://github.com/meilisearch/engine-team/blob/main/issue-templates/roadmap-issue.md
-# - the changelog issue is created, see https://github.com/meilisearch/engine-team/blob/main/issue-templates/changelog-issue.md
-
-# For each Milestone closed
-# - the `release_version` label is created
-# - this label is applied to all issues/PRs in the Milestone
-
-on:
-  milestone:
-    types: [created, closed]
-
-env:
-  MILESTONE_VERSION: ${{ github.event.milestone.title }}
-  MILESTONE_URL: ${{ github.event.milestone.html_url }}
-  MILESTONE_DUE_ON: ${{ github.event.milestone.due_on }}
-  GH_TOKEN: ${{ secrets.MEILI_BOT_GH_PAT }}
-
-jobs:
-
-# -----------------
-# MILESTONE CREATED
-# -----------------
-
-  get-release-version:
-    if: github.event.action == 'created'
-    runs-on: ubuntu-latest
-    outputs:
-      is-patch: ${{ steps.check-patch.outputs.is-patch }}
-    steps:
-      - uses: actions/checkout@v3
-      - name: Check if this release is a patch release only
-        id: check-patch
-        run: |
-          echo version: $MILESTONE_VERSION
-          if [[ $MILESTONE_VERSION =~ ^v[0-9]+\.[0-9]+\.0$ ]]; then
-            echo 'This is NOT a patch release'
-            echo "is-patch=false" >> $GITHUB_OUTPUT
-          elif [[ $MILESTONE_VERSION =~ ^v[0-9]+\.[0-9]+\.[0-9]+$ ]]; then
-            echo 'This is a patch release'
-            echo "is-patch=true" >> $GITHUB_OUTPUT
-          else
-            echo "Not a valid format of release, check the Milestone's title."
-            echo 'Should be vX.Y.Z'
-            exit 1
-          fi
-
-  create-roadmap-issue:
-    needs: get-release-version
-    # Create the roadmap issue if the release is not only a patch release
-    if: github.event.action == 'created' && needs.get-release-version.outputs.is-patch == 'false'
-    runs-on: ubuntu-latest
-    env:
-      ISSUE_TEMPLATE: issue-template.md
-    steps:
-      - uses: actions/checkout@v3
-      - name: Download the issue template
-        run: curl -s https://raw.githubusercontent.com/meilisearch/engine-team/main/issue-templates/roadmap-issue.md > $ISSUE_TEMPLATE
-      - name: Replace all empty occurrences in the templates
-        run: |
-          # Replace all <<version>> occurrences
-          sed -i "s/<<version>>/$MILESTONE_VERSION/g" $ISSUE_TEMPLATE
-
-          # Replace all <<milestone_id>> occurrences
-          milestone_id=$(echo $MILESTONE_URL | cut -d '/' -f 7)
-          sed -i "s/<<milestone_id>>/$milestone_id/g" $ISSUE_TEMPLATE
-
-          # Replace release date if exists
-          if [[ ! -z $MILESTONE_DUE_ON ]]; then
-            date=$(echo $MILESTONE_DUE_ON | cut -d 'T' -f 1)
-            sed -i "s/Release date\: 20XX-XX-XX/Release date\: $date/g" $ISSUE_TEMPLATE
-          fi
-      - name: Create the issue
-        run: |
-          gh issue create \
-            --title "$MILESTONE_VERSION ROADMAP" \
-            --label 'epic,impacts docs,impacts integrations,impacts cloud' \
-            --body-file $ISSUE_TEMPLATE \
-            --milestone $MILESTONE_VERSION
-
-  create-changelog-issue:
-    needs: get-release-version
-    # Create the changelog issue if the release is not only a patch release
-    if: github.event.action == 'created' && needs.get-release-version.outputs.is-patch == 'false'
-    runs-on: ubuntu-latest
-    env:
-      ISSUE_TEMPLATE: issue-template.md
-    steps:
-      - uses: actions/checkout@v3
-      - name: Download the issue template
-        run: curl -s https://raw.githubusercontent.com/meilisearch/engine-team/main/issue-templates/changelog-issue.md > $ISSUE_TEMPLATE
-      - name: Replace all empty occurrences in the templates
-        run: |
-          # Replace all <<version>> occurrences
-          sed -i "s/<<version>>/$MILESTONE_VERSION/g" $ISSUE_TEMPLATE
-
-          # Replace all <<milestone_id>> occurrences
-          milestone_id=$(echo $MILESTONE_URL | cut -d '/' -f 7)
-          sed -i "s/<<milestone_id>>/$milestone_id/g" $ISSUE_TEMPLATE
-      - name: Create the issue
-        run: |
-          gh issue create \
-            --title "Create release changelogs for $MILESTONE_VERSION" \
-            --label 'impacts docs,documentation' \
-            --body-file $ISSUE_TEMPLATE \
-            --milestone $MILESTONE_VERSION \
-            --assignee curquiza
-
-  create-update-version-issue:
-    needs: get-release-version
-    # Create the update-version issue even if the release is a patch release
-    if: github.event.action == 'created'
-    runs-on: ubuntu-latest
-    env:
-      ISSUE_TEMPLATE: issue-template.md
-    steps:
-      - uses: actions/checkout@v3
-      - name: Download the issue template
-        run: curl -s https://raw.githubusercontent.com/meilisearch/engine-team/main/issue-templates/update-version-issue.md > $ISSUE_TEMPLATE
-      - name: Create the issue
-        run: |
-          gh issue create \
-            --title "Update version in Cargo.toml for $MILESTONE_VERSION" \
-            --label 'maintenance' \
-            --body-file $ISSUE_TEMPLATE \
-            --milestone $MILESTONE_VERSION
-
-  create-update-openapi-issue:
-    needs: get-release-version
-    # Create the openAPI issue if the release is not only a patch release
-    if: github.event.action == 'created' && needs.get-release-version.outputs.is-patch == 'false'
-    runs-on: ubuntu-latest
-    env:
-      ISSUE_TEMPLATE: issue-template.md
-    steps:
-      - uses: actions/checkout@v3
-      - name: Download the issue template
-        run: curl -s https://raw.githubusercontent.com/meilisearch/engine-team/main/issue-templates/update-openapi-issue.md > $ISSUE_TEMPLATE
-      - name: Create the issue
-        run: |
-          gh issue create \
-            --title "Update Open API file for $MILESTONE_VERSION" \
-            --label 'maintenance' \
-            --body-file $ISSUE_TEMPLATE \
-            --milestone $MILESTONE_VERSION
-
-# ----------------
-# MILESTONE CLOSED
-# ----------------
-
-  create-release-label:
-    if: github.event.action == 'closed'
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v3
-      - name: Create the ${{ env.MILESTONE_VERSION }} label
-        run: |
-          label_description="PRs/issues solved in $MILESTONE_VERSION"
-          if [[ ! -z $MILESTONE_DUE_ON ]]; then
-            date=$(echo $MILESTONE_DUE_ON | cut -d 'T' -f 1)
-            label_description="$label_description released on $date"
-          fi
-
-          gh api repos/meilisearch/meilisearch/labels \
-            --method POST \
-            -H "Accept: application/vnd.github+json" \
-            -f name="$MILESTONE_VERSION" \
-            -f description="$label_description" \
-            -f color='ff5ba3'
-
-  labelize-all-milestone-content:
-    if: github.event.action == 'closed'
-    needs: create-release-label
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v3
-      - name: Add label ${{ env.MILESTONE_VERSION }} to all PRs in the Milestone
-        run: |
-          prs=$(gh pr list --search milestone:"$MILESTONE_VERSION" --limit 1000 --state all --json number --template '{{range .}}{{tablerow (printf "%v" .number)}}{{end}}')
-          for pr in $prs; do
-              gh pr edit $pr --add-label $MILESTONE_VERSION
-          done
-      - name: Add label ${{ env.MILESTONE_VERSION }} to all issues in the Milestone
-        run: |
-          issues=$(gh issue list --search milestone:"$MILESTONE_VERSION" --limit 1000 --state all --json number --template '{{range .}}{{tablerow (printf "%v" .number)}}{{end}}')
-          for issue in $issues; do
-              gh issue edit $issue --add-label $MILESTONE_VERSION
-          done

.github/workflows/publish-apt-brew-pkg.yml

@@ -25,14 +25,14 @@ jobs:
         run: |
           apt-get update && apt-get install -y curl
           apt-get install build-essential -y
-      - uses: dtolnay/rust-toolchain@1.81
+      - uses: dtolnay/rust-toolchain@1.85
       - name: Install cargo-deb
         run: cargo install cargo-deb
       - uses: actions/checkout@v3
       - name: Build deb package
         run: cargo deb -p meilisearch -o target/debian/meilisearch.deb
       - name: Upload debian pkg to release
-        uses: svenstaro/upload-release-action@2.7.0
+        uses: svenstaro/upload-release-action@2.11.2
         with:
           repo_token: ${{ secrets.MEILI_BOT_GH_PAT }}
           file: target/debian/meilisearch.deb

.github/workflows/publish-binaries.yml

@@ -45,13 +45,13 @@ jobs:
         run: |
           apt-get update && apt-get install -y curl
           apt-get install build-essential -y
-      - uses: dtolnay/rust-toolchain@1.81
+      - uses: dtolnay/rust-toolchain@1.85
       - name: Build
         run: cargo build --release --locked
       # No need to upload binaries for dry run (cron)
       - name: Upload binaries to release
         if: github.event_name == 'release'
-        uses: svenstaro/upload-release-action@2.7.0
+        uses: svenstaro/upload-release-action@2.11.2
         with:
           repo_token: ${{ secrets.MEILI_BOT_GH_PAT }}
           file: target/release/meilisearch
@@ -75,13 +75,13 @@ jobs:
             asset_name: meilisearch-windows-amd64.exe
     steps:
       - uses: actions/checkout@v3
-      - uses: dtolnay/rust-toolchain@1.81
+      - uses: dtolnay/rust-toolchain@1.85
       - name: Build
         run: cargo build --release --locked
       # No need to upload binaries for dry run (cron)
       - name: Upload binaries to release
         if: github.event_name == 'release'
-        uses: svenstaro/upload-release-action@2.7.0
+        uses: svenstaro/upload-release-action@2.11.2
         with:
           repo_token: ${{ secrets.MEILI_BOT_GH_PAT }}
           file: target/release/${{ matrix.artifact_name }}
@@ -101,7 +101,7 @@ jobs:
       - name: Checkout repository
         uses: actions/checkout@v3
       - name: Installing Rust toolchain
-        uses: dtolnay/rust-toolchain@1.81
+        uses: dtolnay/rust-toolchain@1.85
         with:
           profile: minimal
           target: ${{ matrix.target }}
@@ -113,7 +113,7 @@ jobs:
       - name: Upload the binary to release
         # No need to upload binaries for dry run (cron)
         if: github.event_name == 'release'
-        uses: svenstaro/upload-release-action@2.7.0
+        uses: svenstaro/upload-release-action@2.11.2
         with:
           repo_token: ${{ secrets.MEILI_BOT_GH_PAT }}
           file: target/${{ matrix.target }}/release/meilisearch
@@ -148,7 +148,7 @@ jobs:
           add-apt-repository "deb [arch=$(dpkg --print-architecture)] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable"
           apt-get update -y && apt-get install -y docker-ce
       - name: Installing Rust toolchain
-        uses: dtolnay/rust-toolchain@1.81
+        uses: dtolnay/rust-toolchain@1.85
         with:
           profile: minimal
           target: ${{ matrix.target }}
@@ -178,7 +178,7 @@ jobs:
       - name: Upload the binary to release
         # No need to upload binaries for dry run (cron)
         if: github.event_name == 'release'
-        uses: svenstaro/upload-release-action@2.7.0
+        uses: svenstaro/upload-release-action@2.11.2
         with:
           repo_token: ${{ secrets.MEILI_BOT_GH_PAT }}
           file: target/${{ matrix.target }}/release/meilisearch

.github/workflows/publish-docker-images.yml

@@ -16,6 +16,8 @@ on:
 jobs:
   docker:
     runs-on: docker
+    permissions:
+      id-token: write # This is needed to use Cosign in keyless mode
     steps:
       - uses: actions/checkout@v3
 
@@ -62,6 +64,9 @@ jobs:
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v3
 
+      - name: Install cosign
+        uses: sigstore/cosign-installer@d58896d6a1865668819e1d91763c7751a165e159 # tag=v3.9.2
+
       - name: Login to Docker Hub
         uses: docker/login-action@v3
         with:
@@ -85,6 +90,7 @@ jobs:
 
       - name: Build and push
         uses: docker/build-push-action@v6
+        id: build-and-push
         with:
           push: true
           platforms: linux/amd64,linux/arm64
@@ -94,6 +100,17 @@ jobs:
             COMMIT_DATE=${{ steps.build-metadata.outputs.date }}
             GIT_TAG=${{ github.ref_name }}
 
+      - name: Sign the images with GitHub OIDC Token
+        env:
+          DIGEST: ${{ steps.build-and-push.outputs.digest }}
+          TAGS: ${{ steps.meta.outputs.tags }}
+        run: |
+          images=""
+          for tag in ${TAGS}; do
+            images+="${tag}@${DIGEST} "
+          done
+          cosign sign --yes ${images}
+
       # /!\ Don't touch this without checking with Cloud team
       - name: Send CI information to Cloud team
         # Do not send if nightly build (i.e. 'schedule' or 'workflow_dispatch' event)
@@ -104,3 +121,22 @@ jobs:
           repository: meilisearch/meilisearch-cloud
           event-type: cloud-docker-build
           client-payload: '{ "meilisearch_version": "${{ github.ref_name }}", "stable": "${{ steps.check-tag-format.outputs.stable }}" }'
+
+      # Send notification to Swarmia to notify of a deployment: https://app.swarmia.com
+      # - name: 'Setup jq'
+      #   uses: dcarbone/install-jq-action
+      # - name: Send deployment to Swarmia
+      #   if: github.event_name == 'push' && success()
+      #   run: |
+      #     JSON_STRING=$( jq --null-input --compact-output \
+      #     --arg version "${{ github.ref_name }}" \
+      #     --arg appName "meilisearch" \
+      #     --arg environment "production" \
+      #     --arg commitSha "${{ github.sha }}" \
+      #     --arg repositoryFullName "${{ github.repository }}" \
+      #     '{"version": $version, "appName": $appName, "environment": $environment, "commitSha": $commitSha, "repositoryFullName": $repositoryFullName}' )
+
+      #     curl -H "Authorization: ${{ secrets.SWARMIA_DEPLOYMENTS_AUTHORIZATION }}" \
+      #       -H "Content-Type: application/json" \
+      #       -d "$JSON_STRING" \
+      #       https://hook.swarmia.com/deployments

.github/workflows/release-drafter.yml

@@ -0,0 +1,20 @@
+name: Release Drafter
+
+permissions:
+  contents: read
+  pull-requests: write
+
+on:
+  push:
+    branches:
+      - main
+
+jobs:
+  update_release_draft:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: release-drafter/release-drafter@v6
+        with:
+          config-name: release-draft-template.yml
+        env:
+          GITHUB_TOKEN: ${{ secrets.RELEASE_DRAFTER_TOKEN }}

.github/workflows/sdks-tests.yml

@@ -9,7 +9,7 @@ on:
         required: false
         default: nightly
   schedule:
-    - cron: "0 6 * * MON" # Every Monday at 6:00AM
+    - cron: '0 6 * * *' # Every day at 6:00am
 
 env:
   MEILI_MASTER_KEY: 'masterKey'
@@ -22,7 +22,7 @@ jobs:
     outputs:
       docker-image: ${{ steps.define-image.outputs.docker-image }}
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v3
       - name: Define the Docker image we need to use
         id: define-image
         run: |
@@ -46,7 +46,7 @@ jobs:
       MEILISEARCH_VERSION: ${{ needs.define-docker-image.outputs.docker-image }}
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v3
         with:
           repository: meilisearch/meilisearch-dotnet
       - name: Setup .NET Core
@@ -75,7 +75,7 @@ jobs:
         ports:
           - '7700:7700'
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v3
         with:
           repository: meilisearch/meilisearch-dart
       - uses: dart-lang/setup-dart@v1
@@ -103,7 +103,7 @@ jobs:
         uses: actions/setup-go@v5
         with:
           go-version: stable
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v3
         with:
           repository: meilisearch/meilisearch-go
       - name: Get dependencies
@@ -114,7 +114,7 @@ jobs:
             dep ensure
           fi
       - name: Run integration tests
-        run: go test -v ./...
+        run: go test --race -v ./integration
 
   meilisearch-java-tests:
     needs: define-docker-image
@@ -129,7 +129,7 @@ jobs:
         ports:
           - '7700:7700'
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v3
         with:
           repository: meilisearch/meilisearch-java
       - name: Set up Java
@@ -156,7 +156,7 @@ jobs:
         ports:
           - '7700:7700'
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v3
         with:
           repository: meilisearch/meilisearch-js
       - name: Setup node
@@ -191,7 +191,7 @@ jobs:
         ports:
           - '7700:7700'
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v3
         with:
           repository: meilisearch/meilisearch-php
       - name: Install PHP
@@ -220,7 +220,7 @@ jobs:
         ports:
           - '7700:7700'
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v3
         with:
           repository: meilisearch/meilisearch-python
       - name: Set up Python
@@ -245,7 +245,7 @@ jobs:
         ports:
           - '7700:7700'
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v3
         with:
           repository: meilisearch/meilisearch-ruby
       - name: Set up Ruby 3
@@ -270,7 +270,7 @@ jobs:
         ports:
           - '7700:7700'
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v3
         with:
           repository: meilisearch/meilisearch-rust
       - name: Build
@@ -291,7 +291,7 @@ jobs:
         ports:
           - '7700:7700'
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v3
         with:
           repository: meilisearch/meilisearch-swift
       - name: Run tests
@@ -314,7 +314,7 @@ jobs:
         ports:
           - '7700:7700'
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v3
         with:
           repository: meilisearch/meilisearch-js-plugins
       - name: Setup node
@@ -344,15 +344,23 @@ jobs:
           MEILI_NO_ANALYTICS: ${{ env.MEILI_NO_ANALYTICS }}
         ports:
           - '7700:7700'
+    env:
+      RAILS_VERSION: '7.0'
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v3
         with:
           repository: meilisearch/meilisearch-rails
-      - name: Set up Ruby 3
+      - name: Install SQLite dependencies
+        run: sudo apt-get update && sudo apt-get install -y libsqlite3-dev
+      - name: Set up Ruby
         uses: ruby/setup-ruby@v1
         with:
           ruby-version: 3
           bundler-cache: true
+      - name: Start MongoDB
+        uses: supercharge/mongodb-github-action@1.12.0
+        with:
+          mongodb-version: 8.0
       - name: Run tests
         run: bundle exec rspec
 
@@ -369,7 +377,7 @@ jobs:
         ports:
           - '7700:7700'
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v3
         with:
           repository: meilisearch/meilisearch-symfony
       - name: Install PHP

.github/workflows/test-suite.yml

@@ -3,7 +3,7 @@ name: Test suite
 on:
   workflow_dispatch:
   schedule:
-    # Everyday at 5:00am
+    # Every day at 5:00am
     - cron: "0 5 * * *"
   pull_request:
   merge_group:
@@ -21,15 +21,15 @@ jobs:
       # Use ubuntu-22.04 to compile with glibc 2.35
       image: ubuntu:22.04
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v3
       - name: Install needed dependencies
         run: |
           apt-get update && apt-get install -y curl
           apt-get install build-essential -y
       - name: Setup test with Rust stable
-        uses: dtolnay/rust-toolchain@1.81
+        uses: dtolnay/rust-toolchain@1.85
       - name: Cache dependencies
-        uses: Swatinem/rust-cache@v2.7.7
+        uses: Swatinem/rust-cache@v2.8.0
       - name: Run cargo check without any default features
         uses: actions-rs/cargo@v1
         with:
@@ -51,8 +51,8 @@ jobs:
     steps:
       - uses: actions/checkout@v3
       - name: Cache dependencies
-        uses: Swatinem/rust-cache@v2.7.7
-      - uses: dtolnay/rust-toolchain@1.81
+        uses: Swatinem/rust-cache@v2.8.0
+      - uses: dtolnay/rust-toolchain@1.85
       - name: Run cargo check without any default features
         uses: actions-rs/cargo@v1
         with:
@@ -77,7 +77,7 @@ jobs:
         run: |
           apt-get update
           apt-get install --assume-yes build-essential curl
-      - uses: dtolnay/rust-toolchain@1.81
+      - uses: dtolnay/rust-toolchain@1.85
       - name: Run cargo build with almost all features
         run: |
           cargo build --workspace --locked --release --features "$(cargo xtask list-features --exclude-feature cuda,test-ollama)"
@@ -91,7 +91,7 @@ jobs:
     env:
       MEILI_TEST_OLLAMA_SERVER: "http://localhost:11434"
     steps:
-      - uses: actions/checkout@v1
+      - uses: actions/checkout@v3
       - name: Install Ollama
         run: |
           curl -fsSL https://ollama.com/install.sh | sudo -E sh
@@ -129,7 +129,7 @@ jobs:
         run: |
           apt-get update
           apt-get install --assume-yes build-essential curl
-      - uses: dtolnay/rust-toolchain@1.81
+      - uses: dtolnay/rust-toolchain@1.85
       - name: Run cargo tree without default features and check lindera is not present
         run: |
           if cargo tree -f '{p} {f}' -e normal --no-default-features | grep -qz lindera; then
@@ -153,9 +153,9 @@ jobs:
         run: |
           apt-get update && apt-get install -y curl
           apt-get install build-essential -y
-      - uses: dtolnay/rust-toolchain@1.81
+      - uses: dtolnay/rust-toolchain@1.85
       - name: Cache dependencies
-        uses: Swatinem/rust-cache@v2.7.7
+        uses: Swatinem/rust-cache@v2.8.0
       - name: Run tests in debug
         uses: actions-rs/cargo@v1
         with:
@@ -167,12 +167,12 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
-      - uses: dtolnay/rust-toolchain@1.81
+      - uses: dtolnay/rust-toolchain@1.85
         with:
           profile: minimal
           components: clippy
       - name: Cache dependencies
-        uses: Swatinem/rust-cache@v2.7.7
+        uses: Swatinem/rust-cache@v2.8.0
       - name: Run cargo clippy
         uses: actions-rs/cargo@v1
         with:
@@ -184,14 +184,14 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
-      - uses: dtolnay/rust-toolchain@1.81
+      - uses: dtolnay/rust-toolchain@1.85
         with:
           profile: minimal
           toolchain: nightly-2024-07-09
           override: true
           components: rustfmt
       - name: Cache dependencies
-        uses: Swatinem/rust-cache@v2.7.7
+        uses: Swatinem/rust-cache@v2.8.0
       - name: Run cargo fmt
         # Since we never ran the `build.rs` script in the benchmark directory we are missing one auto-generated import file.
         # Since we want to trigger (and fail) this action as fast as possible, instead of building the benchmark crate

.github/workflows/update-cargo-toml-version.yml

@@ -4,7 +4,7 @@ on:
   workflow_dispatch:
     inputs:
       new_version:
-        description: 'The new version (vX.Y.Z)'
+        description: "The new version (vX.Y.Z)"
         required: true
 
 env:
@@ -18,7 +18,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
-      - uses: dtolnay/rust-toolchain@1.81
+      - uses: dtolnay/rust-toolchain@1.85
         with:
           profile: minimal
       - name: Install sd

.gitignore

@@ -5,18 +5,27 @@
 **/*.json_lines
 **/*.rs.bk
 /*.mdb
-/data.ms
+/*.ms
 /snapshots
 /dumps
 /bench
 /_xtask_benchmark.ms
 /benchmarks
+.DS_Store
 
 # Snapshots
 ## ... large
 *.full.snap
-##  ... unreviewed
+## ... unreviewed
 *.snap.new
+## ... pending
+*.pending-snap
+
+# Tmp files
+.tmp*
+
+# Database snapshot
+crates/meilisearch/db.snapshot
 
 # Fuzzcheck data for the facet indexing fuzz test
 crates/milli/fuzz/update::facet::incremental::fuzz::fuzz/

CONTRIBUTING.md

@@ -57,9 +57,17 @@ This command will be triggered to each PR as a requirement for merging it.
 You can set the `LINDERA_CACHE` environment variable to speed up your successive builds by up to 2 minutes.
 It'll store some built artifacts in the directory of your choice.
 
-We recommend using the standard `$HOME/.cache/lindera` directory:
+We recommend using the `$HOME/.cache/meili/lindera` directory:
 ```sh
-export LINDERA_CACHE=$HOME/.cache/lindera
+export LINDERA_CACHE=$HOME/.cache/meili/lindera
+```
+
+You can set the `MILLI_BENCH_DATASETS_PATH` environment variable to further speed up your builds.
+It'll store some big files used for the benchmarks in the directory of your choice.
+
+We recommend using the `$HOME/.cache/meili/benches` directory:
+```sh
+export MILLI_BENCH_DATASETS_PATH=$HOME/.cache/meili/benches
 ```
 
 Furthermore, you can improve incremental compilation by setting the `MEILI_NO_VERGEN` environment variable.
@@ -98,7 +106,13 @@ Run `cargo xtask --help` from the root of the repository to find out what is ava
 #### Update the openAPI file if the API changed
 
 To update the openAPI file in the code, see [sprint_issue.md](https://github.com/meilisearch/meilisearch/blob/main/.github/ISSUE_TEMPLATE/sprint_issue.md#reminders-when-modifying-the-api).
-If you want to update the openAPI file on the [open-api repository](https://github.com/meilisearch/open-api), see [update-openapi-issue.md](https://github.com/meilisearch/engine-team/blob/main/issue-templates/update-openapi-issue.md).
+
+If you want to update the openAPI file on the [open-api repository](https://github.com/meilisearch/open-api):
+- Pull the latest version of the latest rc of Meilisearch `git checkout release-vX.Y.Z; git pull`
+- Starts Meilisearch with the `swagger` feature flag: `cargo run --features swagger`
+- On a browser, open the following URL: http://localhost:7700/scalar
+- Click the « Download openAPI file »
+- Open a PR replacing [this file](https://github.com/meilisearch/open-api/blob/main/open-api.json) with the one downloaded
 
 ### Logging
 
@@ -152,25 +166,37 @@ Some notes on GitHub PRs:
   The draft PRs are recommended when you want to show that you are working on something and make your work visible.
 - The branch related to the PR must be **up-to-date with `main`** before merging. Fortunately, this project uses [GitHub Merge Queues](https://github.blog/news-insights/product-news/github-merge-queue-is-generally-available/) to automatically enforce this requirement without the PR author having to rebase manually.
 
-## Release Process (for internal team only)
-
-Meilisearch tools follow the [Semantic Versioning Convention](https://semver.org/).
-
-### Automation to rebase and Merge the PRs
+## Merging PRs
 
 This project uses GitHub Merge Queues that helps us manage pull requests merging.
 
-### How to Publish a new Release
+Before merging a PR, the maintainer should ensure the following requirements are met
+- Automated tests have been added.
+- If some tests cannot be automated, manual rigorous tests should be applied.
+- ⚠️ If there is an change in the DB: it's mandatory to manually test the `--experimental-dumpless-upgrade` on a DB of the previous Meilisearch minor version (e.g. v1.13 for the v1.14 release).
+- If necessary, the feature have been tested in the Cloud production environment (with [prototypes](./documentation/prototypes.md)) and the Cloud UI is ready.
+- If necessary, the [documentation](https://github.com/meilisearch/documentation) related to the implemented feature in the PR is ready.
+- If necessary, the [integrations](https://github.com/meilisearch/integration-guides) related to the implemented feature in the PR are ready.
 
-The full Meilisearch release process is described in [this guide](https://github.com/meilisearch/engine-team/blob/main/resources/meilisearch-release.md). Please follow it carefully before doing any release.
+## Publish Process (for internal team only)
+
+Meilisearch tools follow the [Semantic Versioning Convention](https://semver.org/).
+
+### How to publish a new release
+
+The full Meilisearch release process is described in [this guide](./documentation/release.md).
 
 ### How to publish a prototype
 
 Depending on the developed feature, you might need to provide a prototyped version of Meilisearch to make it easier to test by the users.
 
 This happens in two steps:
-- [Release the prototype](https://github.com/meilisearch/engine-team/blob/main/resources/prototypes.md#how-to-publish-a-prototype)
-- [Communicate about it](https://github.com/meilisearch/engine-team/blob/main/resources/prototypes.md#communication)
+- [Release the prototype](./documentation/prototypes.md#how-to-publish-a-prototype)
+- [Communicate about it](./documentation/prototypes.md#communication)
+
+### How to implement and publish an experimental feature
+
+Here is our [guidelines and process](./documentation/experimental-features.md) to implement and publish an experimental feature.
 
 ### Release assets
 

Cargo.toml

@@ -22,7 +22,7 @@ members = [
 ]
 
 [workspace.package]
-version = "1.14.0"
+version = "1.16.0"
 authors = [
     "Quentin de Quelen <quentin@dequelen.me>",
     "Clément Renault <clement@meilisearch.com>",

Dockerfile

@@ -1,5 +1,5 @@
 # Compile
-FROM    rust:1.81.0-alpine3.20 AS compiler
+FROM    rust:1.85-alpine3.20 AS compiler
 
 RUN     apk add -q --no-cache build-base openssl-dev
 

README.md

@@ -41,7 +41,7 @@
 - [**Movies**](https://where2watch.meilisearch.com/?utm_campaign=oss&utm_source=github&utm_medium=organization) — An application to help you find streaming platforms to watch movies using [hybrid search](https://www.meilisearch.com/solutions/hybrid-search?utm_campaign=oss&utm_source=github&utm_medium=meilisearch&utm_content=demos).
 - [**Ecommerce**](https://ecommerce.meilisearch.com/?utm_campaign=oss&utm_source=github&utm_medium=meilisearch&utm_content=demos) — Ecommerce website using disjunctive [facets](https://www.meilisearch.com/docs/learn/fine_tuning_results/faceted_search?utm_campaign=oss&utm_source=github&utm_medium=meilisearch&utm_content=demos), range and rating filtering, and pagination.
 - [**Songs**](https://music.meilisearch.com/?utm_campaign=oss&utm_source=github&utm_medium=meilisearch&utm_content=demos) — Search through 47 million of songs.
-- [**SaaS**](https://saas.meilisearch.com/?utm_campaign=oss&utm_source=github&utm_medium=meilisearch&utm_content=demos) — Search for contacts, deals, and companies in this [multi-tenant](https://www.meilisearch.com/docs/learn/security/multitenancy_tenant_tokens?utm_campaign=oss&utm_source=github&utm_medium=meilisearch&utm_content=demos) CRM application.
+- [**SaaS**](https://saas.meilisearch.com/?utm_campaign=oss&utm_source=github&utm_medium=meilisearch&utm_content=demos) — Search for contacts, deals, and companies in this [multi-tenant](https://www.meilisearch.com/docs/learn/security/multitenancy_tenant_tokens?utm_campaign=oss&utm_source=github&utm_medium=meilisearch&utm_content=demos) CRM application.
 
 See the list of all our example apps in our [demos repository](https://github.com/meilisearch/demos).
 
@@ -99,7 +99,7 @@ If you want to know more about the kind of data we collect and what we use it fo
 
 ## 📫 Get in touch!
 
-Meilisearch is a search engine created by [Meili]([https://www.welcometothejungle.com/en/companies/meilisearch](https://www.meilisearch.com/careers)), a software development company headquartered in France and with team members all over the world. Want to know more about us? [Check out our blog!](https://blog.meilisearch.com/?utm_campaign=oss&utm_source=github&utm_medium=meilisearch&utm_content=contact)
+Meilisearch is a search engine created by [Meili](https://www.meilisearch.com/careers), a software development company headquartered in France and with team members all over the world. Want to know more about us? [Check out our blog!](https://blog.meilisearch.com/?utm_campaign=oss&utm_source=github&utm_medium=meilisearch&utm_content=contact)
 
 🗞 [Subscribe to our newsletter](https://meilisearch.us2.list-manage.com/subscribe?u=27870f7b71c908a8b359599fb&id=79582d828e) if you don't want to miss any updates! We promise we won't clutter your mailbox: we only send one edition every two months.
 
@@ -119,6 +119,6 @@ Meilisearch is, and will always be, open-source! If you want to contribute to th
 
 Meilisearch releases and their associated binaries are available on the project's [releases page](https://github.com/meilisearch/meilisearch/releases).
 
-The binaries are versioned following [SemVer conventions](https://semver.org/). To know more, read our [versioning policy](https://github.com/meilisearch/engine-team/blob/main/resources/versioning-policy.md).
+The binaries are versioned following [SemVer conventions](https://semver.org/). To know more, read our [versioning policy](./documentation/versioning-policy.md).
 
 Differently from the binaries, crates in this repository are not currently available on [crates.io](https://crates.io/) and do not follow [SemVer conventions](https://semver.org).

assets/grafana-dashboard.json

@@ -1501,6 +1501,300 @@
       "title": "Task queue latency",
       "type": "timeseries"
     },
+    {
+      "datasource": {
+        "type": "prometheus",
+        "uid": "${DS_PROMETHEUS}"
+      },
+      "fieldConfig": {
+        "defaults": {
+          "color": {
+            "mode": "palette-classic"
+          },
+          "custom": {
+            "axisBorderShow": false,
+            "axisCenteredZero": false,
+            "axisColorMode": "text",
+            "axisLabel": "",
+            "axisPlacement": "auto",
+            "barAlignment": 0,
+            "drawStyle": "line",
+            "fillOpacity": 15,
+            "gradientMode": "none",
+            "hideFrom": {
+              "legend": false,
+              "tooltip": false,
+              "viz": false
+            },
+            "insertNulls": false,
+            "lineInterpolation": "linear",
+            "lineWidth": 1,
+            "pointSize": 5,
+            "scaleDistribution": {
+              "type": "linear"
+            },
+            "showPoints": "never",
+            "spanNulls": false,
+            "stacking": {
+              "group": "A",
+              "mode": "none"
+            },
+            "thresholdsStyle": {
+              "mode": "off"
+            }
+          },
+          "mappings": [],
+          "thresholds": {
+            "mode": "absolute",
+            "steps": [
+              {
+                "color": "green"
+              },
+              {
+                "color": "red",
+                "value": 80
+              }
+            ]
+          },
+          "unit": "none"
+        },
+        "overrides": []
+      },
+      "gridPos": {
+        "h": 11,
+        "w": 12,
+        "x": 12,
+        "y": 51
+      },
+      "id": 29,
+      "interval": "5s",
+      "options": {
+        "legend": {
+          "calcs": [],
+          "displayMode": "list",
+          "placement": "right",
+          "showLegend": true
+        },
+        "tooltip": {
+          "mode": "single",
+          "sort": "none"
+        }
+      },
+      "pluginVersion": "8.1.4",
+      "targets": [
+        {
+          "datasource": {
+            "type": "prometheus",
+            "uid": "${DS_PROMETHEUS}"
+          },
+          "editorMode": "builder",
+          "exemplar": true,
+          "expr": "meilisearch_task_queue_used_size{instance=\"$instance\", job=\"$job\"}",
+          "interval": "",
+          "legendFormat": "{{value}} ",
+          "range": true,
+          "refId": "A"
+        }
+      ],
+      "title": "Task queue used size in bytes",
+      "type": "timeseries"
+    },
+    {
+      "datasource": {
+        "type": "prometheus",
+        "uid": "${DS_PROMETHEUS}"
+      },
+      "fieldConfig": {
+        "defaults": {
+          "color": {
+            "mode": "palette-classic"
+          },
+          "custom": {
+            "axisBorderShow": false,
+            "axisCenteredZero": false,
+            "axisColorMode": "text",
+            "axisLabel": "",
+            "axisPlacement": "auto",
+            "barAlignment": 0,
+            "drawStyle": "line",
+            "fillOpacity": 15,
+            "gradientMode": "none",
+            "hideFrom": {
+              "legend": false,
+              "tooltip": false,
+              "viz": false
+            },
+            "insertNulls": false,
+            "lineInterpolation": "linear",
+            "lineWidth": 1,
+            "pointSize": 5,
+            "scaleDistribution": {
+              "type": "linear"
+            },
+            "showPoints": "never",
+            "spanNulls": false,
+            "stacking": {
+              "group": "A",
+              "mode": "none"
+            },
+            "thresholdsStyle": {
+              "mode": "off"
+            }
+          },
+          "mappings": [],
+          "thresholds": {
+            "mode": "absolute",
+            "steps": [
+              {
+                "color": "green"
+              },
+              {
+                "color": "red",
+                "value": 80
+              }
+            ]
+          },
+          "unit": "none"
+        },
+        "overrides": []
+      },
+      "gridPos": {
+        "h": 11,
+        "w": 12,
+        "x": 12,
+        "y": 51
+      },
+      "id": 29,
+      "interval": "5s",
+      "options": {
+        "legend": {
+          "calcs": [],
+          "displayMode": "list",
+          "placement": "right",
+          "showLegend": true
+        },
+        "tooltip": {
+          "mode": "single",
+          "sort": "none"
+        }
+      },
+      "pluginVersion": "8.1.4",
+      "targets": [
+        {
+          "datasource": {
+            "type": "prometheus",
+            "uid": "${DS_PROMETHEUS}"
+          },
+          "editorMode": "builder",
+          "exemplar": true,
+          "expr": "meilisearch_task_queue_size_until_stop_registering{instance=\"$instance\", job=\"$job\"}",
+          "interval": "",
+          "legendFormat": "{{value}} ",
+          "range": true,
+          "refId": "A"
+        }
+      ],
+      "title": "Task queue available size until it stop receiving tasks.",
+      "type": "timeseries"
+    },
+    {
+      "datasource": {
+        "type": "prometheus",
+        "uid": "${DS_PROMETHEUS}"
+      },
+      "fieldConfig": {
+        "defaults": {
+          "color": {
+            "mode": "palette-classic"
+          },
+          "custom": {
+            "axisBorderShow": false,
+            "axisCenteredZero": false,
+            "axisColorMode": "text",
+            "axisLabel": "",
+            "axisPlacement": "auto",
+            "barAlignment": 0,
+            "drawStyle": "line",
+            "fillOpacity": 15,
+            "gradientMode": "none",
+            "hideFrom": {
+              "legend": false,
+              "tooltip": false,
+              "viz": false
+            },
+            "insertNulls": false,
+            "lineInterpolation": "linear",
+            "lineWidth": 1,
+            "pointSize": 5,
+            "scaleDistribution": {
+              "type": "linear"
+            },
+            "showPoints": "never",
+            "spanNulls": false,
+            "stacking": {
+              "group": "A",
+              "mode": "none"
+            },
+            "thresholdsStyle": {
+              "mode": "off"
+            }
+          },
+          "mappings": [],
+          "thresholds": {
+            "mode": "absolute",
+            "steps": [
+              {
+                "color": "green"
+              },
+              {
+                "color": "red",
+                "value": 80
+              }
+            ]
+          },
+          "unit": "none"
+        },
+        "overrides": []
+      },
+      "gridPos": {
+        "h": 11,
+        "w": 12,
+        "x": 12,
+        "y": 51
+      },
+      "id": 29,
+      "interval": "5s",
+      "options": {
+        "legend": {
+          "calcs": [],
+          "displayMode": "list",
+          "placement": "right",
+          "showLegend": true
+        },
+        "tooltip": {
+          "mode": "single",
+          "sort": "none"
+        }
+      },
+      "pluginVersion": "8.1.4",
+      "targets": [
+        {
+          "datasource": {
+            "type": "prometheus",
+            "uid": "${DS_PROMETHEUS}"
+          },
+          "editorMode": "builder",
+          "exemplar": true,
+          "expr": "meilisearch_task_queue_max_size{instance=\"$instance\", job=\"$job\"}",
+          "interval": "",
+          "legendFormat": "{{value}} ",
+          "range": true,
+          "refId": "A"
+        }
+      ],
+      "title": "Task queue maximum possible size",
+      "type": "stat"
+    },
     {
       "collapsed": true,
       "datasource": {

crates/benchmarks/Cargo.toml

@@ -11,27 +11,27 @@ edition.workspace = true
 license.workspace = true
 
 [dependencies]
-anyhow = "1.0.95"
-bumpalo = "3.16.0"
+anyhow = "1.0.98"
+bumpalo = "3.18.1"
 csv = "1.3.1"
-memmap2 = "0.9.5"
+memmap2 = "0.9.7"
 milli = { path = "../milli" }
-mimalloc = { version = "0.1.43", default-features = false }
-serde_json = { version = "1.0.135", features = ["preserve_order"] }
-tempfile = "3.15.0"
+mimalloc = { version = "0.1.47", default-features = false }
+serde_json = { version = "1.0.140", features = ["preserve_order"] }
+tempfile = "3.20.0"
 
 [dev-dependencies]
-criterion = { version = "0.5.1", features = ["html_reports"] }
+criterion = { version = "0.6.0", features = ["html_reports"] }
 rand = "0.8.5"
 rand_chacha = "0.3.1"
-roaring = "0.10.10"
+roaring = "0.10.12"
 
 [build-dependencies]
-anyhow = "1.0.95"
-bytes = "1.9.0"
-convert_case = "0.6.0"
-flate2 = "1.0.35"
-reqwest = { version = "0.12.12", features = ["blocking", "rustls-tls"], default-features = false }
+anyhow = "1.0.98"
+bytes = "1.10.1"
+convert_case = "0.8.0"
+flate2 = "1.1.2"
+reqwest = { version = "0.12.20", features = ["blocking", "rustls-tls"], default-features = false }
 
 [features]
 default = ["milli/all-tokenizations"]
@@ -51,3 +51,7 @@ harness = false
 [[bench]]
 name = "indexing"
 harness = false
+
+[[bench]]
+name = "sort"
+harness = false

crates/benchmarks/benches/indexing.rs

@@ -11,7 +11,7 @@ use milli::heed::{EnvOpenOptions, RwTxn};
 use milli::progress::Progress;
 use milli::update::new::indexer;
 use milli::update::{IndexerConfig, Settings};
-use milli::vector::EmbeddingConfigs;
+use milli::vector::RuntimeEmbedders;
 use milli::{FilterableAttributesRule, Index};
 use rand::seq::SliceRandom;
 use rand_chacha::rand_core::SeedableRng;
@@ -65,7 +65,7 @@ fn setup_settings<'t>(
     let sortable_fields = sortable_fields.iter().map(|s| s.to_string()).collect();
     builder.set_sortable_fields(sortable_fields);
 
-    builder.execute(|_| (), || false).unwrap();
+    builder.execute(&|| false, &Progress::default(), Default::default()).unwrap();
 }
 
 fn setup_index_with_settings(
@@ -166,9 +166,10 @@ fn indexing_songs_default(c: &mut Criterion) {
                     new_fields_ids_map,
                     primary_key,
                     &document_changes,
-                    EmbeddingConfigs::default(),
+                    RuntimeEmbedders::default(),
                     &|| false,
                     &Progress::default(),
+                    &Default::default(),
                 )
                 .unwrap();
 
@@ -232,9 +233,10 @@ fn reindexing_songs_default(c: &mut Criterion) {
                     new_fields_ids_map,
                     primary_key,
                     &document_changes,
-                    EmbeddingConfigs::default(),
+                    RuntimeEmbedders::default(),
                     &|| false,
                     &Progress::default(),
+                    &Default::default(),
                 )
                 .unwrap();
 
@@ -276,9 +278,10 @@ fn reindexing_songs_default(c: &mut Criterion) {
                     new_fields_ids_map,
                     primary_key,
                     &document_changes,
-                    EmbeddingConfigs::default(),
+                    RuntimeEmbedders::default(),
                     &|| false,
                     &Progress::default(),
+                    &Default::default(),
                 )
                 .unwrap();
 
@@ -344,9 +347,10 @@ fn deleting_songs_in_batches_default(c: &mut Criterion) {
                     new_fields_ids_map,
                     primary_key,
                     &document_changes,
-                    EmbeddingConfigs::default(),
+                    RuntimeEmbedders::default(),
                     &|| false,
                     &Progress::default(),
+                    &Default::default(),
                 )
                 .unwrap();
 
@@ -420,9 +424,10 @@ fn indexing_songs_in_three_batches_default(c: &mut Criterion) {
                     new_fields_ids_map,
                     primary_key,
                     &document_changes,
-                    EmbeddingConfigs::default(),
+                    RuntimeEmbedders::default(),
                     &|| false,
                     &Progress::default(),
+                    &Default::default(),
                 )
                 .unwrap();
 
@@ -464,9 +469,10 @@ fn indexing_songs_in_three_batches_default(c: &mut Criterion) {
                     new_fields_ids_map,
                     primary_key,
                     &document_changes,
-                    EmbeddingConfigs::default(),
+                    RuntimeEmbedders::default(),
                     &|| false,
                     &Progress::default(),
+                    &Default::default(),
                 )
                 .unwrap();
 
@@ -504,9 +510,10 @@ fn indexing_songs_in_three_batches_default(c: &mut Criterion) {
                     new_fields_ids_map,
                     primary_key,
                     &document_changes,
-                    EmbeddingConfigs::default(),
+                    RuntimeEmbedders::default(),
                     &|| false,
                     &Progress::default(),
+                    &Default::default(),
                 )
                 .unwrap();
 
@@ -571,9 +578,10 @@ fn indexing_songs_without_faceted_numbers(c: &mut Criterion) {
                     new_fields_ids_map,
                     primary_key,
                     &document_changes,
-                    EmbeddingConfigs::default(),
+                    RuntimeEmbedders::default(),
                     &|| false,
                     &Progress::default(),
+                    &Default::default(),
                 )
                 .unwrap();
 
@@ -637,9 +645,10 @@ fn indexing_songs_without_faceted_fields(c: &mut Criterion) {
                     new_fields_ids_map,
                     primary_key,
                     &document_changes,
-                    EmbeddingConfigs::default(),
+                    RuntimeEmbedders::default(),
                     &|| false,
                     &Progress::default(),
+                    &Default::default(),
                 )
                 .unwrap();
 
@@ -703,9 +712,10 @@ fn indexing_wiki(c: &mut Criterion) {
                     new_fields_ids_map,
                     primary_key,
                     &document_changes,
-                    EmbeddingConfigs::default(),
+                    RuntimeEmbedders::default(),
                     &|| false,
                     &Progress::default(),
+                    &Default::default(),
                 )
                 .unwrap();
 
@@ -768,9 +778,10 @@ fn reindexing_wiki(c: &mut Criterion) {
                     new_fields_ids_map,
                     primary_key,
                     &document_changes,
-                    EmbeddingConfigs::default(),
+                    RuntimeEmbedders::default(),
                     &|| false,
                     &Progress::default(),
+                    &Default::default(),
                 )
                 .unwrap();
 
@@ -812,9 +823,10 @@ fn reindexing_wiki(c: &mut Criterion) {
                     new_fields_ids_map,
                     primary_key,
                     &document_changes,
-                    EmbeddingConfigs::default(),
+                    RuntimeEmbedders::default(),
                     &|| false,
                     &Progress::default(),
+                    &Default::default(),
                 )
                 .unwrap();
 
@@ -879,9 +891,10 @@ fn deleting_wiki_in_batches_default(c: &mut Criterion) {
                     new_fields_ids_map,
                     primary_key,
                     &document_changes,
-                    EmbeddingConfigs::default(),
+                    RuntimeEmbedders::default(),
                     &|| false,
                     &Progress::default(),
+                    &Default::default(),
                 )
                 .unwrap();
 
@@ -955,9 +968,10 @@ fn indexing_wiki_in_three_batches(c: &mut Criterion) {
                     new_fields_ids_map,
                     primary_key,
                     &document_changes,
-                    EmbeddingConfigs::default(),
+                    RuntimeEmbedders::default(),
                     &|| false,
                     &Progress::default(),
+                    &Default::default(),
                 )
                 .unwrap();
 
@@ -1000,9 +1014,10 @@ fn indexing_wiki_in_three_batches(c: &mut Criterion) {
                     new_fields_ids_map,
                     primary_key,
                     &document_changes,
-                    EmbeddingConfigs::default(),
+                    RuntimeEmbedders::default(),
                     &|| false,
                     &Progress::default(),
+                    &Default::default(),
                 )
                 .unwrap();
 
@@ -1041,9 +1056,10 @@ fn indexing_wiki_in_three_batches(c: &mut Criterion) {
                     new_fields_ids_map,
                     primary_key,
                     &document_changes,
-                    EmbeddingConfigs::default(),
+                    RuntimeEmbedders::default(),
                     &|| false,
                     &Progress::default(),
+                    &Default::default(),
                 )
                 .unwrap();
 
@@ -1107,9 +1123,10 @@ fn indexing_movies_default(c: &mut Criterion) {
                     new_fields_ids_map,
                     primary_key,
                     &document_changes,
-                    EmbeddingConfigs::default(),
+                    RuntimeEmbedders::default(),
                     &|| false,
                     &Progress::default(),
+                    &Default::default(),
                 )
                 .unwrap();
 
@@ -1172,9 +1189,10 @@ fn reindexing_movies_default(c: &mut Criterion) {
                     new_fields_ids_map,
                     primary_key,
                     &document_changes,
-                    EmbeddingConfigs::default(),
+                    RuntimeEmbedders::default(),
                     &|| false,
                     &Progress::default(),
+                    &Default::default(),
                 )
                 .unwrap();
 
@@ -1216,9 +1234,10 @@ fn reindexing_movies_default(c: &mut Criterion) {
                     new_fields_ids_map,
                     primary_key,
                     &document_changes,
-                    EmbeddingConfigs::default(),
+                    RuntimeEmbedders::default(),
                     &|| false,
                     &Progress::default(),
+                    &Default::default(),
                 )
                 .unwrap();
 
@@ -1283,9 +1302,10 @@ fn deleting_movies_in_batches_default(c: &mut Criterion) {
                     new_fields_ids_map,
                     primary_key,
                     &document_changes,
-                    EmbeddingConfigs::default(),
+                    RuntimeEmbedders::default(),
                     &|| false,
                     &Progress::default(),
+                    &Default::default(),
                 )
                 .unwrap();
 
@@ -1331,9 +1351,10 @@ fn delete_documents_from_ids(index: Index, document_ids_to_delete: Vec<RoaringBi
             new_fields_ids_map,
             Some(primary_key),
             &document_changes,
-            EmbeddingConfigs::default(),
+            RuntimeEmbedders::default(),
             &|| false,
             &Progress::default(),
+            &Default::default(),
         )
         .unwrap();
 
@@ -1395,9 +1416,10 @@ fn indexing_movies_in_three_batches(c: &mut Criterion) {
                     new_fields_ids_map,
                     primary_key,
                     &document_changes,
-                    EmbeddingConfigs::default(),
+                    RuntimeEmbedders::default(),
                     &|| false,
                     &Progress::default(),
+                    &Default::default(),
                 )
                 .unwrap();
 
@@ -1439,9 +1461,10 @@ fn indexing_movies_in_three_batches(c: &mut Criterion) {
                     new_fields_ids_map,
                     primary_key,
                     &document_changes,
-                    EmbeddingConfigs::default(),
+                    RuntimeEmbedders::default(),
                     &|| false,
                     &Progress::default(),
+                    &Default::default(),
                 )
                 .unwrap();
 
@@ -1479,9 +1502,10 @@ fn indexing_movies_in_three_batches(c: &mut Criterion) {
                     new_fields_ids_map,
                     primary_key,
                     &document_changes,
-                    EmbeddingConfigs::default(),
+                    RuntimeEmbedders::default(),
                     &|| false,
                     &Progress::default(),
+                    &Default::default(),
                 )
                 .unwrap();
 
@@ -1568,9 +1592,10 @@ fn indexing_nested_movies_default(c: &mut Criterion) {
                     new_fields_ids_map,
                     primary_key,
                     &document_changes,
-                    EmbeddingConfigs::default(),
+                    RuntimeEmbedders::default(),
                     &|| false,
                     &Progress::default(),
+                    &Default::default(),
                 )
                 .unwrap();
 
@@ -1658,9 +1683,10 @@ fn deleting_nested_movies_in_batches_default(c: &mut Criterion) {
                     new_fields_ids_map,
                     primary_key,
                     &document_changes,
-                    EmbeddingConfigs::default(),
+                    RuntimeEmbedders::default(),
                     &|| false,
                     &Progress::default(),
+                    &Default::default(),
                 )
                 .unwrap();
 
@@ -1740,9 +1766,10 @@ fn indexing_nested_movies_without_faceted_fields(c: &mut Criterion) {
                     new_fields_ids_map,
                     primary_key,
                     &document_changes,
-                    EmbeddingConfigs::default(),
+                    RuntimeEmbedders::default(),
                     &|| false,
                     &Progress::default(),
+                    &Default::default(),
                 )
                 .unwrap();
 
@@ -1806,9 +1833,10 @@ fn indexing_geo(c: &mut Criterion) {
                     new_fields_ids_map,
                     primary_key,
                     &document_changes,
-                    EmbeddingConfigs::default(),
+                    RuntimeEmbedders::default(),
                     &|| false,
                     &Progress::default(),
+                    &Default::default(),
                 )
                 .unwrap();
 
@@ -1871,9 +1899,10 @@ fn reindexing_geo(c: &mut Criterion) {
                     new_fields_ids_map,
                     primary_key,
                     &document_changes,
-                    EmbeddingConfigs::default(),
+                    RuntimeEmbedders::default(),
                     &|| false,
                     &Progress::default(),
+                    &Default::default(),
                 )
                 .unwrap();
 
@@ -1915,9 +1944,10 @@ fn reindexing_geo(c: &mut Criterion) {
                     new_fields_ids_map,
                     primary_key,
                     &document_changes,
-                    EmbeddingConfigs::default(),
+                    RuntimeEmbedders::default(),
                     &|| false,
                     &Progress::default(),
+                    &Default::default(),
                 )
                 .unwrap();
 
@@ -1982,9 +2012,10 @@ fn deleting_geo_in_batches_default(c: &mut Criterion) {
                     new_fields_ids_map,
                     primary_key,
                     &document_changes,
-                    EmbeddingConfigs::default(),
+                    RuntimeEmbedders::default(),
                     &|| false,
                     &Progress::default(),
+                    &Default::default(),
                 )
                 .unwrap();
 

crates/benchmarks/benches/search_geo.rs

@@ -2,7 +2,8 @@ mod datasets_paths;
 mod utils;
 
 use criterion::{criterion_group, criterion_main};
-use milli::{update::Settings, FilterableAttributesRule};
+use milli::update::Settings;
+use milli::FilterableAttributesRule;
 use utils::Conf;
 
 #[cfg(not(windows))]

crates/benchmarks/benches/search_songs.rs

@@ -2,7 +2,8 @@ mod datasets_paths;
 mod utils;
 
 use criterion::{criterion_group, criterion_main};
-use milli::{update::Settings, FilterableAttributesRule};
+use milli::update::Settings;
+use milli::FilterableAttributesRule;
 use utils::Conf;
 
 #[cfg(not(windows))]

crates/benchmarks/benches/sort.rs

@@ -0,0 +1,114 @@
+//! This benchmark module is used to compare the performance of sorting documents in /search VS /documents
+//!
+//! The tests/benchmarks were designed in the context of a query returning only 20 documents.
+
+mod datasets_paths;
+mod utils;
+
+use criterion::{criterion_group, criterion_main};
+use milli::update::Settings;
+use utils::Conf;
+
+#[cfg(not(windows))]
+#[global_allocator]
+static ALLOC: mimalloc::MiMalloc = mimalloc::MiMalloc;
+
+fn base_conf(builder: &mut Settings) {
+    let displayed_fields =
+        ["geonameid", "name", "asciiname", "alternatenames", "_geo", "population"]
+            .iter()
+            .map(|s| s.to_string())
+            .collect();
+    builder.set_displayed_fields(displayed_fields);
+
+    let sortable_fields =
+        ["_geo", "name", "population", "elevation", "timezone", "modification-date"]
+            .iter()
+            .map(|s| s.to_string())
+            .collect();
+    builder.set_sortable_fields(sortable_fields);
+}
+
+#[rustfmt::skip]
+const BASE_CONF: Conf = Conf {
+    dataset: datasets_paths::SMOL_ALL_COUNTRIES,
+    dataset_format: "jsonl",
+    configure: base_conf,
+    primary_key: Some("geonameid"),
+    queries: &[""],
+    offsets: &[
+        Some((0, 20)), // The most common query in the real world
+        Some((0, 500)), // A query that ranges over many documents
+        Some((980, 20)), // The worst query that could happen in the real world
+        Some((800_000, 20)) // The worst query
+    ],
+    get_documents: true,
+    ..Conf::BASE
+};
+
+fn bench_sort(c: &mut criterion::Criterion) {
+    #[rustfmt::skip]
+    let confs = &[
+        utils::Conf {
+            group_name: "without sort",
+            sort: None,
+            ..BASE_CONF
+        },
+
+        utils::Conf {
+            group_name: "sort on many different values",
+            sort: Some(vec!["name:asc"]),
+            ..BASE_CONF
+        },
+
+        utils::Conf {
+            group_name: "sort on many similar values",
+            sort: Some(vec!["timezone:desc"]),
+            ..BASE_CONF
+        },
+
+        utils::Conf {
+            group_name: "sort on many similar then different values",
+            sort: Some(vec!["timezone:desc", "name:asc"]),
+            ..BASE_CONF
+        },
+
+        utils::Conf {
+            group_name: "sort on many different then similar values",
+            sort: Some(vec!["timezone:desc", "name:asc"]),
+            ..BASE_CONF
+        },
+
+        utils::Conf {
+            group_name: "geo sort",
+            sample_size: Some(10),
+            sort: Some(vec!["_geoPoint(45.4777599, 9.1967508):asc"]),
+            ..BASE_CONF
+        },
+
+        utils::Conf {
+            group_name: "sort on many similar values then geo sort",
+            sample_size: Some(50),
+            sort: Some(vec!["timezone:desc", "_geoPoint(45.4777599, 9.1967508):asc"]),
+            ..BASE_CONF
+        },
+
+        utils::Conf {
+            group_name: "sort on many different values then geo sort",
+            sample_size: Some(50),
+            sort: Some(vec!["name:desc", "_geoPoint(45.4777599, 9.1967508):asc"]),
+            ..BASE_CONF
+        },
+
+        utils::Conf {
+            group_name: "sort on many fields",
+            sort: Some(vec!["population:asc", "name:asc", "elevation:asc", "timezone:asc"]),
+            ..BASE_CONF
+        },
+    ];
+
+    utils::run_benches(c, confs);
+}
+
+criterion_group!(benches, bench_sort);
+criterion_main!(benches);

crates/benchmarks/benches/utils.rs

@@ -9,11 +9,12 @@ use anyhow::Context;
 use bumpalo::Bump;
 use criterion::BenchmarkId;
 use memmap2::Mmap;
+use milli::documents::sort::recursive_sort;
 use milli::heed::EnvOpenOptions;
 use milli::progress::Progress;
 use milli::update::new::indexer;
 use milli::update::{IndexerConfig, Settings};
-use milli::vector::EmbeddingConfigs;
+use milli::vector::RuntimeEmbedders;
 use milli::{Criterion, Filter, Index, Object, TermsMatchingStrategy};
 use serde_json::Value;
 
@@ -35,6 +36,12 @@ pub struct Conf<'a> {
     pub configure: fn(&mut Settings),
     pub filter: Option<&'a str>,
     pub sort: Option<Vec<&'a str>>,
+    /// set to skip documents (offset, limit)
+    pub offsets: &'a [Option<(usize, usize)>],
+    /// enable if you want to bench getting documents without querying
+    pub get_documents: bool,
+    /// configure the benchmark sample size
+    pub sample_size: Option<usize>,
     /// enable or disable the optional words on the query
     pub optional_words: bool,
     /// primary key, if there is None we'll auto-generate docids for every documents
@@ -52,6 +59,9 @@ impl Conf<'_> {
         configure: |_| (),
         filter: None,
         sort: None,
+        offsets: &[None],
+        get_documents: false,
+        sample_size: None,
         optional_words: true,
         primary_key: None,
     };
@@ -90,7 +100,7 @@ pub fn base_setup(conf: &Conf) -> Index {
 
     (conf.configure)(&mut builder);
 
-    builder.execute(|_| (), || false).unwrap();
+    builder.execute(&|| false, &Progress::default(), Default::default()).unwrap();
     wtxn.commit().unwrap();
 
     let config = IndexerConfig::default();
@@ -125,9 +135,10 @@ pub fn base_setup(conf: &Conf) -> Index {
         new_fields_ids_map,
         primary_key,
         &document_changes,
-        EmbeddingConfigs::default(),
+        RuntimeEmbedders::default(),
         &|| false,
         &Progress::default(),
+        &Default::default(),
     )
     .unwrap();
 
@@ -144,25 +155,79 @@ pub fn run_benches(c: &mut criterion::Criterion, confs: &[Conf]) {
         let file_name = Path::new(conf.dataset).file_name().and_then(|f| f.to_str()).unwrap();
         let name = format!("{}: {}", file_name, conf.group_name);
         let mut group = c.benchmark_group(&name);
+        if let Some(sample_size) = conf.sample_size {
+            group.sample_size(sample_size);
+        }
 
         for &query in conf.queries {
-            group.bench_with_input(BenchmarkId::from_parameter(query), &query, |b, &query| {
-                b.iter(|| {
-                    let rtxn = index.read_txn().unwrap();
-                    let mut search = index.search(&rtxn);
-                    search.query(query).terms_matching_strategy(TermsMatchingStrategy::default());
-                    if let Some(filter) = conf.filter {
-                        let filter = Filter::from_str(filter).unwrap().unwrap();
-                        search.filter(filter);
-                    }
-                    if let Some(sort) = &conf.sort {
-                        let sort = sort.iter().map(|sort| sort.parse().unwrap()).collect();
-                        search.sort_criteria(sort);
-                    }
-                    let _ids = search.execute().unwrap();
-                });
-            });
+            for offset in conf.offsets {
+                let parameter = match offset {
+                    None => query.to_string(),
+                    Some((offset, limit)) => format!("{query}[{offset}:{limit}]"),
+                };
+                group.bench_with_input(
+                    BenchmarkId::from_parameter(parameter),
+                    &query,
+                    |b, &query| {
+                        b.iter(|| {
+                            let rtxn = index.read_txn().unwrap();
+                            let mut search = index.search(&rtxn);
+                            search
+                                .query(query)
+                                .terms_matching_strategy(TermsMatchingStrategy::default());
+                            if let Some(filter) = conf.filter {
+                                let filter = Filter::from_str(filter).unwrap().unwrap();
+                                search.filter(filter);
+                            }
+                            if let Some(sort) = &conf.sort {
+                                let sort = sort.iter().map(|sort| sort.parse().unwrap()).collect();
+                                search.sort_criteria(sort);
+                            }
+                            if let Some((offset, limit)) = offset {
+                                search.offset(*offset).limit(*limit);
+                            }
+
+                            let _ids = search.execute().unwrap();
+                        });
+                    },
+                );
+            }
         }
+
+        if conf.get_documents {
+            for offset in conf.offsets {
+                let parameter = match offset {
+                    None => String::from("get_documents"),
+                    Some((offset, limit)) => format!("get_documents[{offset}:{limit}]"),
+                };
+                group.bench_with_input(BenchmarkId::from_parameter(parameter), &(), |b, &()| {
+                    b.iter(|| {
+                        let rtxn = index.read_txn().unwrap();
+                        if let Some(sort) = &conf.sort {
+                            let sort = sort.iter().map(|sort| sort.parse().unwrap()).collect();
+                            let all_docs = index.documents_ids(&rtxn).unwrap();
+                            let facet_sort =
+                                recursive_sort(&index, &rtxn, sort, &all_docs).unwrap();
+                            let iter = facet_sort.iter().unwrap();
+                            if let Some((offset, limit)) = offset {
+                                let _results = iter.skip(*offset).take(*limit).collect::<Vec<_>>();
+                            } else {
+                                let _results = iter.collect::<Vec<_>>();
+                            }
+                        } else {
+                            let all_docs = index.documents_ids(&rtxn).unwrap();
+                            if let Some((offset, limit)) = offset {
+                                let _results =
+                                    all_docs.iter().skip(*offset).take(*limit).collect::<Vec<_>>();
+                            } else {
+                                let _results = all_docs.iter().collect::<Vec<_>>();
+                            }
+                        }
+                    });
+                });
+            }
+        }
+
         group.finish();
 
         index.prepare_for_closing().wait();

crates/benchmarks/build.rs

@@ -67,7 +67,7 @@ fn main() -> anyhow::Result<()> {
         writeln!(
             &mut manifest_paths_file,
             r#"pub const {}: &str = {:?};"#,
-            dataset.to_case(Case::ScreamingSnake),
+            dataset.to_case(Case::UpperSnake),
             out_file.display(),
         )?;
 

crates/build-info/Cargo.toml

@@ -11,8 +11,8 @@ license.workspace = true
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-time = { version = "0.3.37", features = ["parsing"] }
+time = { version = "0.3.41", features = ["parsing"] }
 
 [build-dependencies]
-anyhow = "1.0.95"
-vergen-git2 = "1.0.2"
+anyhow = "1.0.98"
+vergen-git2 = "1.0.7"

crates/dump/Cargo.toml

@@ -11,21 +11,21 @@ readme.workspace = true
 license.workspace = true
 
 [dependencies]
-anyhow = "1.0.95"
-flate2 = "1.0.35"
-http = "1.2.0"
+anyhow = "1.0.98"
+flate2 = "1.1.2"
+http = "1.3.1"
 meilisearch-types = { path = "../meilisearch-types" }
-once_cell = "1.20.2"
+once_cell = "1.21.3"
 regex = "1.11.1"
-roaring = { version = "0.10.10", features = ["serde"] }
-serde = { version = "1.0.217", features = ["derive"] }
-serde_json = { version = "1.0.135", features = ["preserve_order"] }
-tar = "0.4.43"
-tempfile = "3.15.0"
-thiserror = "2.0.9"
-time = { version = "0.3.37", features = ["serde-well-known", "formatting", "parsing", "macros"] }
+roaring = { version = "0.10.12", features = ["serde"] }
+serde = { version = "1.0.219", features = ["derive"] }
+serde_json = { version = "1.0.140", features = ["preserve_order"] }
+tar = "0.4.44"
+tempfile = "3.20.0"
+thiserror = "2.0.12"
+time = { version = "0.3.41", features = ["serde-well-known", "formatting", "parsing", "macros"] }
 tracing = "0.1.41"
-uuid = { version = "1.11.0", features = ["serde", "v4"] }
+uuid = { version = "1.17.0", features = ["serde", "v4"] }
 
 [dev-dependencies]
 big_s = "1.0.2"

crates/dump/src/lib.rs

@@ -1,12 +1,17 @@
 #![allow(clippy::type_complexity)]
 #![allow(clippy::wrong_self_convention)]
 
+use std::collections::BTreeMap;
+
 use meilisearch_types::batches::BatchId;
+use meilisearch_types::byte_unit::Byte;
 use meilisearch_types::error::ResponseError;
 use meilisearch_types::keys::Key;
 use meilisearch_types::milli::update::IndexDocumentsMethod;
 use meilisearch_types::settings::Unchecked;
-use meilisearch_types::tasks::{Details, IndexSwap, KindWithContent, Status, Task, TaskId};
+use meilisearch_types::tasks::{
+    Details, ExportIndexSettings, IndexSwap, KindWithContent, Status, Task, TaskId,
+};
 use meilisearch_types::InstanceUid;
 use roaring::RoaringBitmap;
 use serde::{Deserialize, Serialize};
@@ -141,6 +146,12 @@ pub enum KindDump {
         instance_uid: Option<InstanceUid>,
     },
     SnapshotCreation,
+    Export {
+        url: String,
+        api_key: Option<String>,
+        payload_size: Option<Byte>,
+        indexes: BTreeMap<String, ExportIndexSettings>,
+    },
     UpgradeDatabase {
         from: (u32, u32, u32),
     },
@@ -213,6 +224,15 @@ impl From<KindWithContent> for KindDump {
                 KindDump::DumpCreation { keys, instance_uid }
             }
             KindWithContent::SnapshotCreation => KindDump::SnapshotCreation,
+            KindWithContent::Export { url, api_key, payload_size, indexes } => KindDump::Export {
+                url,
+                api_key,
+                payload_size,
+                indexes: indexes
+                    .into_iter()
+                    .map(|(pattern, settings)| (pattern.to_string(), settings))
+                    .collect(),
+            },
             KindWithContent::UpgradeDatabase { from: version } => {
                 KindDump::UpgradeDatabase { from: version }
             }
@@ -237,7 +257,7 @@ pub(crate) mod test {
     use meilisearch_types::milli::{self, FilterableAttributesRule};
     use meilisearch_types::settings::{Checked, FacetingSettings, Settings};
     use meilisearch_types::task_view::DetailsView;
-    use meilisearch_types::tasks::{Details, Kind, Status};
+    use meilisearch_types::tasks::{BatchStopReason, Details, Kind, Status};
     use serde_json::{json, Map, Value};
     use time::macros::datetime;
     use uuid::Uuid;
@@ -305,6 +325,7 @@ pub(crate) mod test {
             localized_attributes: Setting::NotSet,
             facet_search: Setting::NotSet,
             prefix_search: Setting::NotSet,
+            chat: Setting::NotSet,
             _kind: std::marker::PhantomData,
         };
         settings.check()
@@ -328,12 +349,14 @@ pub(crate) mod test {
                 write_channel_congestion: None,
                 internal_database_sizes: Default::default(),
             },
+            embedder_stats: Default::default(),
             enqueued_at: Some(BatchEnqueuedAt {
                 earliest: datetime!(2022-11-11 0:00 UTC),
                 oldest: datetime!(2022-11-11 0:00 UTC),
             }),
             started_at: datetime!(2022-11-20 0:00 UTC),
             finished_at: Some(datetime!(2022-11-21 0:00 UTC)),
+            stop_reason: BatchStopReason::Unspecified.to_string(),
         }]
     }
 

crates/dump/src/reader/compat/v1_to_v2.rs

@@ -1,3 +1,4 @@
+use std::fs::File;
 use std::str::FromStr;
 
 use super::v2_to_v3::CompatV2ToV3;
@@ -94,6 +95,10 @@ impl CompatIndexV1ToV2 {
         self.from.documents().map(|it| Box::new(it) as Box<dyn Iterator<Item = _>>)
     }
 
+    pub fn documents_file(&self) -> &File {
+        self.from.documents_file()
+    }
+
     pub fn settings(&mut self) -> Result<v2::settings::Settings<v2::settings::Checked>> {
         Ok(v2::settings::Settings::<v2::settings::Unchecked>::from(self.from.settings()?).check())
     }

crates/dump/src/reader/compat/v2_to_v3.rs

@@ -1,3 +1,4 @@
+use std::fs::File;
 use std::str::FromStr;
 
 use time::OffsetDateTime;
@@ -122,6 +123,13 @@ impl CompatIndexV2ToV3 {
         }
     }
 
+    pub fn documents_file(&self) -> &File {
+        match self {
+            CompatIndexV2ToV3::V2(v2) => v2.documents_file(),
+            CompatIndexV2ToV3::Compat(compat) => compat.documents_file(),
+        }
+    }
+
     pub fn settings(&mut self) -> Result<v3::Settings<v3::Checked>> {
         let settings = match self {
             CompatIndexV2ToV3::V2(from) => from.settings()?,

crates/dump/src/reader/compat/v3_to_v4.rs

@@ -1,3 +1,5 @@
+use std::fs::File;
+
 use super::v2_to_v3::{CompatIndexV2ToV3, CompatV2ToV3};
 use super::v4_to_v5::CompatV4ToV5;
 use crate::reader::{v3, v4, UpdateFile};
@@ -252,6 +254,13 @@ impl CompatIndexV3ToV4 {
         }
     }
 
+    pub fn documents_file(&self) -> &File {
+        match self {
+            CompatIndexV3ToV4::V3(v3) => v3.documents_file(),
+            CompatIndexV3ToV4::Compat(compat) => compat.documents_file(),
+        }
+    }
+
     pub fn settings(&mut self) -> Result<v4::Settings<v4::Checked>> {
         Ok(match self {
             CompatIndexV3ToV4::V3(v3) => {

crates/dump/src/reader/compat/v4_to_v5.rs

@@ -1,3 +1,5 @@
+use std::fs::File;
+
 use super::v3_to_v4::{CompatIndexV3ToV4, CompatV3ToV4};
 use super::v5_to_v6::CompatV5ToV6;
 use crate::reader::{v4, v5, Document};
@@ -241,6 +243,13 @@ impl CompatIndexV4ToV5 {
         }
     }
 
+    pub fn documents_file(&self) -> &File {
+        match self {
+            CompatIndexV4ToV5::V4(v4) => v4.documents_file(),
+            CompatIndexV4ToV5::Compat(compat) => compat.documents_file(),
+        }
+    }
+
     pub fn settings(&mut self) -> Result<v5::Settings<v5::Checked>> {
         match self {
             CompatIndexV4ToV5::V4(v4) => Ok(v5::Settings::from(v4.settings()?).check()),

crates/dump/src/reader/compat/v5_to_v6.rs

@@ -1,3 +1,5 @@
+use std::fs::File;
+use std::num::NonZeroUsize;
 use std::str::FromStr;
 
 use super::v4_to_v5::{CompatIndexV4ToV5, CompatV4ToV5};
@@ -242,6 +244,13 @@ impl CompatIndexV5ToV6 {
         }
     }
 
+    pub fn documents_file(&self) -> &File {
+        match self {
+            CompatIndexV5ToV6::V5(v5) => v5.documents_file(),
+            CompatIndexV5ToV6::Compat(compat) => compat.documents_file(),
+        }
+    }
+
     pub fn settings(&mut self) -> Result<v6::Settings<v6::Checked>> {
         match self {
             CompatIndexV5ToV6::V5(v5) => Ok(v6::Settings::from(v5.settings()?).check()),
@@ -373,6 +382,7 @@ impl<T> From<v5::Settings<T>> for v6::Settings<v6::Unchecked> {
                     },
                     disable_on_words: typo.disable_on_words.into(),
                     disable_on_attributes: typo.disable_on_attributes.into(),
+                    disable_on_numbers: v6::Setting::NotSet,
                 }),
                 v5::Setting::Reset => v6::Setting::Reset,
                 v5::Setting::NotSet => v6::Setting::NotSet,
@@ -387,7 +397,13 @@ impl<T> From<v5::Settings<T>> for v6::Settings<v6::Unchecked> {
             },
             pagination: match settings.pagination {
                 v5::Setting::Set(pagination) => v6::Setting::Set(v6::PaginationSettings {
-                    max_total_hits: pagination.max_total_hits.into(),
+                    max_total_hits: match pagination.max_total_hits {
+                        v5::Setting::Set(max_total_hits) => v6::Setting::Set(
+                            max_total_hits.try_into().unwrap_or(NonZeroUsize::new(1).unwrap()),
+                        ),
+                        v5::Setting::Reset => v6::Setting::Reset,
+                        v5::Setting::NotSet => v6::Setting::NotSet,
+                    },
                 }),
                 v5::Setting::Reset => v6::Setting::Reset,
                 v5::Setting::NotSet => v6::Setting::NotSet,
@@ -397,6 +413,7 @@ impl<T> From<v5::Settings<T>> for v6::Settings<v6::Unchecked> {
             search_cutoff_ms: v6::Setting::NotSet,
             facet_search: v6::Setting::NotSet,
             prefix_search: v6::Setting::NotSet,
+            chat: v6::Setting::NotSet,
             _kind: std::marker::PhantomData,
         }
     }

crates/dump/src/reader/mod.rs

@@ -116,6 +116,15 @@ impl DumpReader {
         }
     }
 
+    pub fn chat_completions_settings(
+        &mut self,
+    ) -> Result<Box<dyn Iterator<Item = Result<(String, v6::ChatCompletionSettings)>> + '_>> {
+        match self {
+            DumpReader::Current(current) => current.chat_completions_settings(),
+            DumpReader::Compat(_compat) => Ok(Box::new(std::iter::empty())),
+        }
+    }
+
     pub fn features(&self) -> Result<Option<v6::RuntimeTogglableFeatures>> {
         match self {
             DumpReader::Current(current) => Ok(current.features()),
@@ -183,6 +192,14 @@ impl DumpIndexReader {
         }
     }
 
+    /// A reference to a file in the NDJSON format containing all the documents of the index
+    pub fn documents_file(&self) -> &File {
+        match self {
+            DumpIndexReader::Current(v6) => v6.documents_file(),
+            DumpIndexReader::Compat(compat) => compat.documents_file(),
+        }
+    }
+
     pub fn settings(&mut self) -> Result<v6::Settings<v6::Checked>> {
         match self {
             DumpIndexReader::Current(v6) => v6.settings(),

crates/dump/src/reader/v1/mod.rs

@@ -72,6 +72,10 @@ impl V1IndexReader {
             .map(|line| -> Result<_> { Ok(serde_json::from_str(&line?)?) }))
     }
 
+    pub fn documents_file(&self) -> &File {
+        self.documents.get_ref()
+    }
+
     pub fn settings(&mut self) -> Result<self::settings::Settings> {
         Ok(serde_json::from_reader(&mut self.settings)?)
     }

crates/dump/src/reader/v2/mod.rs

@@ -203,6 +203,10 @@ impl V2IndexReader {
             .map(|line| -> Result<_> { Ok(serde_json::from_str(&line?)?) }))
     }
 
+    pub fn documents_file(&self) -> &File {
+        self.documents.get_ref()
+    }
+
     pub fn settings(&mut self) -> Result<Settings<Checked>> {
         Ok(self.settings.clone())
     }

crates/dump/src/reader/v3/mod.rs

@@ -215,6 +215,10 @@ impl V3IndexReader {
             .map(|line| -> Result<_> { Ok(serde_json::from_str(&line?)?) }))
     }
 
+    pub fn documents_file(&self) -> &File {
+        self.documents.get_ref()
+    }
+
     pub fn settings(&mut self) -> Result<Settings<Checked>> {
         Ok(self.settings.clone())
     }

crates/dump/src/reader/v4/meta.rs

@@ -108,7 +108,7 @@ where
         /// not supported on untagged enums.
         struct StarOrVisitor<T>(PhantomData<T>);
 
-        impl<'de, T, FE> Visitor<'de> for StarOrVisitor<T>
+        impl<T, FE> Visitor<'_> for StarOrVisitor<T>
         where
             T: FromStr<Err = FE>,
             FE: Display,

crates/dump/src/reader/v4/mod.rs

@@ -210,6 +210,10 @@ impl V4IndexReader {
             .map(|line| -> Result<_> { Ok(serde_json::from_str(&line?)?) }))
     }
 
+    pub fn documents_file(&self) -> &File {
+        self.documents.get_ref()
+    }
+
     pub fn settings(&mut self) -> Result<Settings<Checked>> {
         Ok(self.settings.clone())
     }

crates/dump/src/reader/v4/tasks.rs

@@ -99,7 +99,7 @@ impl Task {
     /// Return true when a task is finished.
     /// A task is finished when its last state is either `Succeeded` or `Failed`.
     pub fn is_finished(&self) -> bool {
-        self.events.last().map_or(false, |event| {
+        self.events.last().is_some_and(|event| {
             matches!(event, TaskEvent::Succeded { .. } | TaskEvent::Failed { .. })
         })
     }

crates/dump/src/reader/v5/meta.rs

@@ -108,7 +108,7 @@ where
         /// not supported on untagged enums.
         struct StarOrVisitor<T>(PhantomData<T>);
 
-        impl<'de, T, FE> Visitor<'de> for StarOrVisitor<T>
+        impl<T, FE> Visitor<'_> for StarOrVisitor<T>
         where
             T: FromStr<Err = FE>,
             FE: Display,

crates/dump/src/reader/v5/mod.rs

@@ -247,6 +247,10 @@ impl V5IndexReader {
             .map(|line| -> Result<_> { Ok(serde_json::from_str(&line?)?) }))
     }
 
+    pub fn documents_file(&self) -> &File {
+        self.documents.get_ref()
+    }
+
     pub fn settings(&mut self) -> Result<Settings<Checked>> {
         Ok(self.settings.clone())
     }

crates/dump/src/reader/v5/tasks.rs

@@ -114,7 +114,7 @@ impl Task {
     /// Return true when a task is finished.
     /// A task is finished when its last state is either `Succeeded` or `Failed`.
     pub fn is_finished(&self) -> bool {
-        self.events.last().map_or(false, |event| {
+        self.events.last().is_some_and(|event| {
             matches!(event, TaskEvent::Succeeded { .. } | TaskEvent::Failed { .. })
         })
     }

crates/dump/src/reader/v6/mod.rs

@@ -1,3 +1,4 @@
+use std::ffi::OsStr;
 use std::fs::{self, File};
 use std::io::{BufRead, BufReader, ErrorKind};
 use std::path::Path;
@@ -21,6 +22,7 @@ pub type Unchecked = meilisearch_types::settings::Unchecked;
 pub type Task = crate::TaskDump;
 pub type Batch = meilisearch_types::batches::Batch;
 pub type Key = meilisearch_types::keys::Key;
+pub type ChatCompletionSettings = meilisearch_types::features::ChatCompletionSettings;
 pub type RuntimeTogglableFeatures = meilisearch_types::features::RuntimeTogglableFeatures;
 pub type Network = meilisearch_types::features::Network;
 
@@ -192,6 +194,34 @@ impl V6Reader {
         )
     }
 
+    pub fn chat_completions_settings(
+        &mut self,
+    ) -> Result<Box<dyn Iterator<Item = Result<(String, ChatCompletionSettings)>> + '_>> {
+        let entries = match fs::read_dir(self.dump.path().join("chat-completions-settings")) {
+            Ok(entries) => entries,
+            Err(e) if e.kind() == ErrorKind::NotFound => return Ok(Box::new(std::iter::empty())),
+            Err(e) => return Err(e.into()),
+        };
+        Ok(Box::new(
+            entries
+                .map(|entry| -> Result<Option<_>> {
+                    let entry = entry?;
+                    let file_name = entry.file_name();
+                    let path = Path::new(&file_name);
+                    if entry.file_type()?.is_file() && path.extension() == Some(OsStr::new("json"))
+                    {
+                        let name = path.file_stem().unwrap().to_str().unwrap().to_string();
+                        let file = File::open(entry.path())?;
+                        let settings = serde_json::from_reader(file)?;
+                        Ok(Some((name, settings)))
+                    } else {
+                        Ok(None)
+                    }
+                })
+                .filter_map(|entry| entry.transpose()),
+        ))
+    }
+
     pub fn features(&self) -> Option<RuntimeTogglableFeatures> {
         self.features
     }
@@ -254,6 +284,10 @@ impl V6IndexReader {
             .map(|line| -> Result<_> { Ok(serde_json::from_str(&line?)?) }))
     }
 
+    pub fn documents_file(&self) -> &File {
+        self.documents.get_ref()
+    }
+
     pub fn settings(&mut self) -> Result<Settings<Checked>> {
         let mut settings: Settings<Unchecked> = serde_json::from_reader(&mut self.settings)?;
         patch_embedders(&mut settings);

crates/dump/src/writer.rs

@@ -5,7 +5,7 @@ use std::path::PathBuf;
 use flate2::write::GzEncoder;
 use flate2::Compression;
 use meilisearch_types::batches::Batch;
-use meilisearch_types::features::{Network, RuntimeTogglableFeatures};
+use meilisearch_types::features::{ChatCompletionSettings, Network, RuntimeTogglableFeatures};
 use meilisearch_types::keys::Key;
 use meilisearch_types::settings::{Checked, Settings};
 use serde_json::{Map, Value};
@@ -51,6 +51,10 @@ impl DumpWriter {
         KeyWriter::new(self.dir.path().to_path_buf())
     }
 
+    pub fn create_chat_completions_settings(&self) -> Result<ChatCompletionsSettingsWriter> {
+        ChatCompletionsSettingsWriter::new(self.dir.path().join("chat-completions-settings"))
+    }
+
     pub fn create_tasks_queue(&self) -> Result<TaskWriter> {
         TaskWriter::new(self.dir.path().join("tasks"))
     }
@@ -104,6 +108,24 @@ impl KeyWriter {
     }
 }
 
+pub struct ChatCompletionsSettingsWriter {
+    path: PathBuf,
+}
+
+impl ChatCompletionsSettingsWriter {
+    pub(crate) fn new(path: PathBuf) -> Result<Self> {
+        std::fs::create_dir(&path)?;
+        Ok(ChatCompletionsSettingsWriter { path })
+    }
+
+    pub fn push_settings(&mut self, name: &str, settings: &ChatCompletionSettings) -> Result<()> {
+        let mut settings_file = File::create(self.path.join(name).with_extension("json"))?;
+        serde_json::to_writer(&mut settings_file, &settings)?;
+        settings_file.flush()?;
+        Ok(())
+    }
+}
+
 pub struct TaskWriter {
     queue: BufWriter<File>,
     update_files: PathBuf,

crates/file-store/Cargo.toml

@@ -11,7 +11,7 @@ edition.workspace = true
 license.workspace = true
 
 [dependencies]
-tempfile = "3.15.0"
-thiserror = "2.0.9"
+tempfile = "3.20.0"
+thiserror = "2.0.12"
 tracing = "0.1.41"
-uuid = { version = "1.11.0", features = ["serde", "v4"] }
+uuid = { version = "1.17.0", features = ["serde", "v4"] }

crates/filter-parser/Cargo.toml

@@ -14,7 +14,7 @@ license.workspace = true
 [dependencies]
 nom = "7.1.3"
 nom_locate = "4.2.0"
-unescaper = "0.1.5"
+unescaper = "0.1.6"
 
 [dev-dependencies]
 # fixed version due to format breakages in v1.40

crates/filter-parser/src/error.rs

@@ -35,7 +35,7 @@ impl<E> NomErrorExt<E> for nom::Err<E> {
 pub fn cut_with_err<'a, O>(
     mut parser: impl FnMut(Span<'a>) -> IResult<'a, O>,
     mut with: impl FnMut(Error<'a>) -> Error<'a>,
-) -> impl FnMut(Span<'a>) -> IResult<O> {
+) -> impl FnMut(Span<'a>) -> IResult<'a, O> {
     move |input| match parser.parse(input) {
         Err(nom::Err::Error(e)) => Err(nom::Err::Failure(with(e))),
         rest => rest,
@@ -121,7 +121,7 @@ impl<'a> ParseError<Span<'a>> for Error<'a> {
     }
 }
 
-impl<'a> Display for Error<'a> {
+impl Display for Error<'_> {
     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
         let input = self.context.fragment();
         // When printing our error message we want to escape all `\n` to be sure we keep our format with the

crates/filter-parser/src/lib.rs

@@ -80,7 +80,7 @@ pub struct Token<'a> {
     value: Option<String>,
 }
 
-impl<'a> PartialEq for Token<'a> {
+impl PartialEq for Token<'_> {
     fn eq(&self, other: &Self) -> bool {
         self.span.fragment() == other.span.fragment()
     }
@@ -226,7 +226,7 @@ impl<'a> FilterCondition<'a> {
         }
     }
 
-    pub fn parse(input: &'a str) -> Result<Option<Self>, Error> {
+    pub fn parse(input: &'a str) -> Result<Option<Self>, Error<'a>> {
         if input.trim().is_empty() {
             return Ok(None);
         }
@@ -527,7 +527,7 @@ pub fn parse_filter(input: Span) -> IResult<FilterCondition> {
     terminated(|input| parse_expression(input, 0), eof)(input)
 }
 
-impl<'a> std::fmt::Display for FilterCondition<'a> {
+impl std::fmt::Display for FilterCondition<'_> {
     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
         match self {
             FilterCondition::Not(filter) => {
@@ -576,7 +576,8 @@ impl<'a> std::fmt::Display for FilterCondition<'a> {
         }
     }
 }
-impl<'a> std::fmt::Display for Condition<'a> {
+
+impl std::fmt::Display for Condition<'_> {
     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
         match self {
             Condition::GreaterThan(token) => write!(f, "> {token}"),
@@ -594,7 +595,8 @@ impl<'a> std::fmt::Display for Condition<'a> {
         }
     }
 }
-impl<'a> std::fmt::Display for Token<'a> {
+
+impl std::fmt::Display for Token<'_> {
     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
         write!(f, "{{{}}}", self.value())
     }

crates/filter-parser/src/value.rs

@@ -52,7 +52,7 @@ fn quoted_by(quote: char, input: Span) -> IResult<Token> {
 }
 
 // word           = (alphanumeric | _ | - | .)+    except for reserved keywords
-pub fn word_not_keyword<'a>(input: Span<'a>) -> IResult<Token<'a>> {
+pub fn word_not_keyword<'a>(input: Span<'a>) -> IResult<'a, Token<'a>> {
     let (input, word): (_, Token<'a>) =
         take_while1(is_value_component)(input).map(|(s, t)| (s, t.into()))?;
     if is_keyword(word.value()) {

crates/flatten-serde-json/Cargo.toml

@@ -16,7 +16,7 @@ license.workspace = true
 serde_json = "1.0"
 
 [dev-dependencies]
-criterion = { version = "0.5.1", features = ["html_reports"] }
+criterion = { version = "0.6.0", features = ["html_reports"] }
 
 [[bench]]
 name = "benchmarks"

crates/fuzzers/Cargo.toml

@@ -12,11 +12,11 @@ license.workspace = true
 
 [dependencies]
 arbitrary = { version = "1.4.1", features = ["derive"] }
-bumpalo = "3.16.0"
-clap = { version = "4.5.24", features = ["derive"] }
-either = "1.13.0"
+bumpalo = "3.18.1"
+clap = { version = "4.5.40", features = ["derive"] }
+either = "1.15.0"
 fastrand = "2.3.0"
 milli = { path = "../milli" }
-serde = { version = "1.0.217", features = ["derive"] }
-serde_json = { version = "1.0.135", features = ["preserve_order"] }
-tempfile = "3.15.0"
+serde = { version = "1.0.219", features = ["derive"] }
+serde_json = { version = "1.0.140", features = ["preserve_order"] }
+tempfile = "3.20.0"

crates/fuzzers/src/bin/fuzz-indexing.rs

@@ -13,7 +13,7 @@ use milli::heed::EnvOpenOptions;
 use milli::progress::Progress;
 use milli::update::new::indexer;
 use milli::update::IndexerConfig;
-use milli::vector::EmbeddingConfigs;
+use milli::vector::RuntimeEmbedders;
 use milli::Index;
 use serde_json::Value;
 use tempfile::TempDir;
@@ -89,7 +89,7 @@ fn main() {
                             let mut new_fields_ids_map = db_fields_ids_map.clone();
 
                             let indexer_alloc = Bump::new();
-                            let embedders = EmbeddingConfigs::default();
+                            let embedders = RuntimeEmbedders::default();
                             let mut indexer = indexer::DocumentOperation::new();
 
                             let mut operations = Vec::new();
@@ -144,6 +144,7 @@ fn main() {
                                 embedders,
                                 &|| false,
                                 &Progress::default(),
+                                &Default::default(),
                             )
                             .unwrap();
 

crates/index-scheduler/Cargo.toml

@@ -11,31 +11,31 @@ edition.workspace = true
 license.workspace = true
 
 [dependencies]
-anyhow = "1.0.95"
+anyhow = "1.0.98"
 bincode = "1.3.3"
 byte-unit = "5.1.6"
-bumpalo = "3.16.0"
+bumpalo = "3.18.1"
 bumparaw-collections = "0.1.4"
-convert_case = "0.6.0"
+convert_case = "0.8.0"
 csv = "1.3.1"
 derive_builder = "0.20.2"
 dump = { path = "../dump" }
 enum-iterator = "2.1.0"
 file-store = { path = "../file-store" }
-flate2 = "1.0.35"
-indexmap = "2.7.0"
+flate2 = "1.1.2"
+indexmap = "2.9.0"
 meilisearch-auth = { path = "../meilisearch-auth" }
 meilisearch-types = { path = "../meilisearch-types" }
-memmap2 = "0.9.5"
+memmap2 = "0.9.7"
 page_size = "0.6.0"
 rayon = "1.10.0"
-roaring = { version = "0.10.10", features = ["serde"] }
-serde = { version = "1.0.217", features = ["derive"] }
-serde_json = { version = "1.0.138", features = ["preserve_order"] }
+roaring = { version = "0.10.12", features = ["serde"] }
+serde = { version = "1.0.219", features = ["derive"] }
+serde_json = { version = "1.0.140", features = ["preserve_order"] }
 synchronoise = "1.0.1"
-tempfile = "3.15.0"
-thiserror = "2.0.9"
-time = { version = "0.3.37", features = [
+tempfile = "3.20.0"
+thiserror = "2.0.12"
+time = { version = "0.3.41", features = [
     "serde-well-known",
     "formatting",
     "parsing",
@@ -43,11 +43,12 @@ time = { version = "0.3.37", features = [
 ] }
 tracing = "0.1.41"
 ureq = "2.12.1"
-uuid = { version = "1.11.0", features = ["serde", "v4"] }
+uuid = { version = "1.17.0", features = ["serde", "v4"] }
+backoff = "0.4.0"
 
 [dev-dependencies]
 big_s = "1.0.2"
-crossbeam-channel = "0.5.14"
+crossbeam-channel = "0.5.15"
 # fixed version due to format breakages in v1.40
 insta = { version = "=1.39.0", features = ["json", "redactions"] }
 maplit = "1.0.2"

crates/index-scheduler/src/dump.rs

@@ -4,6 +4,7 @@ use std::io;
 use dump::{KindDump, TaskDump, UpdateFile};
 use meilisearch_types::batches::{Batch, BatchId};
 use meilisearch_types::heed::RwTxn;
+use meilisearch_types::index_uid_pattern::IndexUidPattern;
 use meilisearch_types::milli;
 use meilisearch_types::tasks::{Kind, KindWithContent, Status, Task};
 use roaring::RoaringBitmap;
@@ -211,6 +212,23 @@ impl<'a> Dump<'a> {
                     KindWithContent::DumpCreation { keys, instance_uid }
                 }
                 KindDump::SnapshotCreation => KindWithContent::SnapshotCreation,
+                KindDump::Export { url, api_key, payload_size, indexes } => {
+                    KindWithContent::Export {
+                        url,
+                        api_key,
+                        payload_size,
+                        indexes: indexes
+                            .into_iter()
+                            .map(|(pattern, settings)| {
+                                Ok((
+                                    IndexUidPattern::try_from(pattern)
+                                        .map_err(|_| Error::CorruptedDump)?,
+                                    settings,
+                                ))
+                            })
+                            .collect::<Result<_, Error>>()?,
+                    }
+                }
                 KindDump::UpgradeDatabase { from } => KindWithContent::UpgradeDatabase { from },
             },
         };

crates/index-scheduler/src/error.rs

@@ -2,6 +2,7 @@ use std::fmt::Display;
 
 use meilisearch_types::batches::BatchId;
 use meilisearch_types::error::{Code, ErrorCode};
+use meilisearch_types::milli::index::RollbackOutcome;
 use meilisearch_types::tasks::{Kind, Status};
 use meilisearch_types::{heed, milli};
 use thiserror::Error;
@@ -151,7 +152,27 @@ pub enum Error {
     #[error(transparent)]
     DatabaseUpgrade(Box<Self>),
     #[error(transparent)]
+    Export(Box<Self>),
+    #[error("Failed to export documents to remote server {code} ({type}): {message} <{link}>")]
+    FromRemoteWhenExporting { message: String, code: String, r#type: String, link: String },
+    #[error("Failed to rollback for index `{index}`: {rollback_outcome} ")]
+    RollbackFailed { index: String, rollback_outcome: RollbackOutcome },
+    #[error(transparent)]
     UnrecoverableError(Box<Self>),
+    #[error("The index scheduler is in version v{}.{}.{}, but Meilisearch is in version v{}.{}.{}.\n  - hint: start the correct version of Meilisearch, or consider updating your database. See also <https://www.meilisearch.com/docs/learn/update_and_migration/updating>",
+    index_scheduler_version.0, index_scheduler_version.1, index_scheduler_version.2,
+    package_version.0, package_version.1, package_version.2)]
+    IndexSchedulerVersionMismatch {
+        index_scheduler_version: (u32, u32, u32),
+        package_version: (u32, u32, u32),
+    },
+    #[error("Index `{index}` is in version v{}.{}.{}, but Meilisearch is in version v{}.{}.{}.\n  - note: this is an internal error, please consider filing a bug report: <https://github.com/meilisearch/meilisearch/issues/new?template=bug_report.md>",
+    index_version.0, index_version.1, index_version.2, package_version.0, package_version.1, package_version.2)]
+    IndexVersionMismatch {
+        index: String,
+        index_version: (u32, u32, u32),
+        package_version: (u32, u32, u32),
+    },
     #[error(transparent)]
     HeedTransaction(heed::Error),
 
@@ -195,6 +216,7 @@ impl Error {
             | Error::BatchNotFound(_)
             | Error::TaskDeletionWithEmptyQuery
             | Error::TaskCancelationWithEmptyQuery
+            | Error::FromRemoteWhenExporting { .. }
             | Error::AbortedTask
             | Error::Dump(_)
             | Error::Heed(_)
@@ -204,11 +226,15 @@ impl Error {
             | Error::IoError(_)
             | Error::Persist(_)
             | Error::FeatureNotEnabled(_)
+            | Error::Export(_)
             | Error::Anyhow(_) => true,
             Error::CreateBatch(_)
             | Error::CorruptedTaskQueue
             | Error::DatabaseUpgrade(_)
             | Error::UnrecoverableError(_)
+            | Error::IndexSchedulerVersionMismatch { .. }
+            | Error::IndexVersionMismatch { .. }
+            | Error::RollbackFailed { .. }
             | Error::HeedTransaction(_) => false,
             #[cfg(test)]
             Error::PlannedFailure => false,
@@ -262,6 +288,7 @@ impl ErrorCode for Error {
             Error::Dump(e) => e.error_code(),
             Error::Milli { error, .. } => error.error_code(),
             Error::ProcessBatchPanicked(_) => Code::Internal,
+            Error::FromRemoteWhenExporting { .. } => Code::Internal,
             Error::Heed(e) => e.error_code(),
             Error::HeedTransaction(e) => e.error_code(),
             Error::FileStore(e) => e.error_code(),
@@ -274,7 +301,11 @@ impl ErrorCode for Error {
             Error::CorruptedTaskQueue => Code::Internal,
             Error::CorruptedDump => Code::Internal,
             Error::DatabaseUpgrade(_) => Code::Internal,
+            Error::Export(_) => Code::Internal,
+            Error::RollbackFailed { .. } => Code::Internal,
             Error::UnrecoverableError(_) => Code::Internal,
+            Error::IndexSchedulerVersionMismatch { .. } => Code::Internal,
+            Error::IndexVersionMismatch { .. } => Code::Internal,
             Error::CreateBatch(_) => Code::Internal,
 
             // This one should never be seen by the end user

crates/index-scheduler/src/features.rs

@@ -131,6 +131,32 @@ impl RoFeatures {
             .into())
         }
     }
+
+    pub fn check_chat_completions(&self, disabled_action: &'static str) -> Result<()> {
+        if self.runtime.chat_completions {
+            Ok(())
+        } else {
+            Err(FeatureNotEnabledError {
+                disabled_action,
+                feature: "chat completions",
+                issue_link: "https://github.com/orgs/meilisearch/discussions/835",
+            }
+            .into())
+        }
+    }
+
+    pub fn check_multimodal(&self, disabled_action: &'static str) -> Result<()> {
+        if self.runtime.multimodal {
+            Ok(())
+        } else {
+            Err(FeatureNotEnabledError {
+                disabled_action,
+                feature: "multimodal",
+                issue_link: "https://github.com/orgs/meilisearch/discussions/846",
+            }
+            .into())
+        }
+    }
 }
 
 impl FeatureData {

crates/index-scheduler/src/index_mapper/mod.rs

@@ -7,6 +7,7 @@ use meilisearch_types::heed::types::{SerdeJson, Str};
 use meilisearch_types::heed::{Database, Env, RoTxn, RwTxn, WithoutTls};
 use meilisearch_types::milli;
 use meilisearch_types::milli::database_stats::DatabaseStats;
+use meilisearch_types::milli::index::RollbackOutcome;
 use meilisearch_types::milli::update::IndexerConfig;
 use meilisearch_types::milli::{FieldDistribution, Index};
 use serde::{Deserialize, Serialize};
@@ -70,7 +71,7 @@ pub struct IndexMapper {
     /// Path to the folder where the LMDB environments of each index are.
     base_path: PathBuf,
     /// The map size an index is opened with on the first time.
-    index_base_map_size: usize,
+    pub(crate) index_base_map_size: usize,
     /// The quantity by which the map size of an index is incremented upon reopening, in bytes.
     index_growth_amount: usize,
     /// Whether we open a meilisearch index with the MDB_WRITEMAP option or not.
@@ -431,6 +432,51 @@ impl IndexMapper {
         Ok(index)
     }
 
+    pub fn rollback_index(
+        &self,
+        rtxn: &RoTxn,
+        name: &str,
+        to: (u32, u32, u32),
+    ) -> Result<RollbackOutcome> {
+        // remove any currently updating index to make sure that we aren't keeping a reference to the index somewhere
+        drop(self.currently_updating_index.write().unwrap().take());
+
+        let uuid = self
+            .index_mapping
+            .get(rtxn, name)?
+            .ok_or_else(|| Error::IndexNotFound(name.to_string()))?;
+
+        // take the lock to make sure noone is messing with the indexes while we rollback
+        // this will block any search or other operation, but we are rollbacking so this is probably acceptable.
+        let mut index_map = self.index_map.write().unwrap();
+
+        'close_index: loop {
+            match index_map.get(&uuid) {
+                Available(_) => {
+                    index_map.close_for_resize(&uuid, self.enable_mdb_writemap, 0);
+                    // index should now be `Closing`; try again
+                    continue;
+                }
+                // index already closed
+                Missing => break 'close_index,
+                // closing requested by this thread or another one; wait for closing to complete, then exit
+                Closing(closing_index) => {
+                    if closing_index.wait_timeout(Duration::from_secs(100)).is_none() {
+                        // release the lock so it doesn't get poisoned
+                        drop(index_map);
+                        panic!("cannot close index")
+                    }
+                    break;
+                }
+                BeingDeleted => return Err(Error::IndexNotFound(name.to_string())),
+            };
+        }
+
+        let index_path = self.base_path.join(uuid.to_string());
+        Index::rollback(milli::heed::EnvOpenOptions::new().read_txn_without_tls(), index_path, to)
+            .map_err(|err| crate::Error::from_milli(err, Some(name.to_string())))
+    }
+
     /// Attempts `f` for each index that exists in the index mapper.
     ///
     /// It is preferable to use this function rather than a loop that opens all indexes, as a way to avoid having all indexes opened,

crates/index-scheduler/src/insta_snapshot.rs

@@ -20,6 +20,7 @@ pub fn snapshot_index_scheduler(scheduler: &IndexScheduler) -> String {
 
     let IndexScheduler {
         cleanup_enabled: _,
+        experimental_no_edition_2024_for_dumps: _,
         processing_tasks,
         env,
         version,
@@ -34,6 +35,7 @@ pub fn snapshot_index_scheduler(scheduler: &IndexScheduler) -> String {
         planned_failures: _,
         run_loop_iteration: _,
         embedders: _,
+        chat_settings: _,
     } = scheduler;
 
     let rtxn = env.read_txn().unwrap();
@@ -41,11 +43,8 @@ pub fn snapshot_index_scheduler(scheduler: &IndexScheduler) -> String {
     let mut snap = String::new();
 
     let indx_sched_version = version.get_version(&rtxn).unwrap();
-    let latest_version = (
-        versioning::VERSION_MAJOR.parse().unwrap(),
-        versioning::VERSION_MINOR.parse().unwrap(),
-        versioning::VERSION_PATCH.parse().unwrap(),
-    );
+    let latest_version =
+        (versioning::VERSION_MAJOR, versioning::VERSION_MINOR, versioning::VERSION_PATCH);
     if indx_sched_version != Some(latest_version) {
         snap.push_str(&format!("index scheduler running on version {indx_sched_version:?}\n"));
     }
@@ -291,6 +290,9 @@ fn snapshot_details(d: &Details) -> String {
         Details::IndexSwap { swaps } => {
             format!("{{ swaps: {swaps:?} }}")
         }
+        Details::Export { url, api_key, payload_size, indexes } => {
+            format!("{{ url: {url:?}, api_key: {api_key:?}, payload_size: {payload_size:?}, indexes: {indexes:?} }}")
+        }
         Details::UpgradeDatabase { from, to } => {
             format!("{{ from: {from:?}, to: {to:?} }}")
         }
@@ -341,7 +343,17 @@ pub fn snapshot_canceled_by(rtxn: &RoTxn, db: Database<BEU32, RoaringBitmapCodec
 
 pub fn snapshot_batch(batch: &Batch) -> String {
     let mut snap = String::new();
-    let Batch { uid, details, stats, started_at, finished_at, progress: _, enqueued_at } = batch;
+    let Batch {
+        uid,
+        details,
+        stats,
+        embedder_stats,
+        started_at,
+        finished_at,
+        progress: _,
+        enqueued_at,
+        stop_reason,
+    } = batch;
     let stats = BatchStats {
         progress_trace: Default::default(),
         internal_database_sizes: Default::default(),
@@ -359,6 +371,13 @@ pub fn snapshot_batch(batch: &Batch) -> String {
     snap.push_str(&format!("uid: {uid}, "));
     snap.push_str(&format!("details: {}, ", serde_json::to_string(details).unwrap()));
     snap.push_str(&format!("stats: {}, ", serde_json::to_string(&stats).unwrap()));
+    if !embedder_stats.skip_serializing() {
+        snap.push_str(&format!(
+            "embedder stats: {}, ",
+            serde_json::to_string(&embedder_stats).unwrap()
+        ));
+    }
+    snap.push_str(&format!("stop reason: {}, ", serde_json::to_string(&stop_reason).unwrap()));
     snap.push('}');
     snap
 }

crates/index-scheduler/src/lib.rs

@@ -51,16 +51,21 @@ pub use features::RoFeatures;
 use flate2::bufread::GzEncoder;
 use flate2::Compression;
 use meilisearch_types::batches::Batch;
-use meilisearch_types::features::{InstanceTogglableFeatures, Network, RuntimeTogglableFeatures};
+use meilisearch_types::features::{
+    ChatCompletionSettings, InstanceTogglableFeatures, Network, RuntimeTogglableFeatures,
+};
 use meilisearch_types::heed::byteorder::BE;
-use meilisearch_types::heed::types::I128;
-use meilisearch_types::heed::{self, Env, RoTxn, WithoutTls};
-use meilisearch_types::milli::index::IndexEmbeddingConfig;
+use meilisearch_types::heed::types::{DecodeIgnore, SerdeJson, Str, I128};
+use meilisearch_types::heed::{self, Database, Env, RoTxn, WithoutTls};
 use meilisearch_types::milli::update::IndexerConfig;
-use meilisearch_types::milli::vector::{Embedder, EmbedderOptions, EmbeddingConfigs};
+use meilisearch_types::milli::vector::json_template::JsonTemplate;
+use meilisearch_types::milli::vector::{
+    Embedder, EmbedderOptions, RuntimeEmbedder, RuntimeEmbedders, RuntimeFragment,
+};
 use meilisearch_types::milli::{self, Index};
 use meilisearch_types::task_view::TaskView;
 use meilisearch_types::tasks::{KindWithContent, Task};
+use milli::vector::db::IndexEmbeddingConfig;
 use processing::ProcessingTasks;
 pub use queue::Query;
 use queue::Queue;
@@ -74,6 +79,9 @@ use crate::utils::clamp_to_page_size;
 
 pub(crate) type BEI128 = I128<BE>;
 
+const TASK_SCHEDULER_SIZE_THRESHOLD_PERCENT_INT: u64 = 40;
+const CHAT_SETTINGS_DB_NAME: &str = "chat-settings";
+
 #[derive(Debug)]
 pub struct IndexSchedulerOptions {
     /// The path to the version file of Meilisearch.
@@ -129,6 +137,8 @@ pub struct IndexSchedulerOptions {
     ///
     /// 0 disables the cache.
     pub embedding_cache_cap: usize,
+    /// Snapshot compaction status.
+    pub experimental_no_snapshot_compaction: bool,
 }
 
 /// Structure which holds meilisearch's indexes and schedules the tasks
@@ -149,12 +159,18 @@ pub struct IndexScheduler {
     /// In charge of fetching and setting the status of experimental features.
     features: features::FeatureData,
 
+    /// Stores the custom chat prompts and other settings of the indexes.
+    pub(crate) chat_settings: Database<Str, SerdeJson<ChatCompletionSettings>>,
+
     /// Everything related to the processing of the tasks
     pub scheduler: scheduler::Scheduler,
 
     /// Whether we should automatically cleanup the task queue or not.
     pub(crate) cleanup_enabled: bool,
 
+    /// Whether we should use the old document indexer or the new one.
+    pub(crate) experimental_no_edition_2024_for_dumps: bool,
+
     /// The webhook url we should send tasks to after processing every batches.
     pub(crate) webhook_url: Option<String>,
     /// The Authorization header to send to the webhook URL.
@@ -197,6 +213,7 @@ impl IndexScheduler {
 
             index_mapper: self.index_mapper.clone(),
             cleanup_enabled: self.cleanup_enabled,
+            experimental_no_edition_2024_for_dumps: self.experimental_no_edition_2024_for_dumps,
             webhook_url: self.webhook_url.clone(),
             webhook_authorization_header: self.webhook_authorization_header.clone(),
             embedders: self.embedders.clone(),
@@ -207,11 +224,16 @@ impl IndexScheduler {
             #[cfg(test)]
             run_loop_iteration: self.run_loop_iteration.clone(),
             features: self.features.clone(),
+            chat_settings: self.chat_settings,
         }
     }
 
     pub(crate) const fn nb_db() -> u32 {
-        Versioning::nb_db() + Queue::nb_db() + IndexMapper::nb_db() + features::FeatureData::nb_db()
+        Versioning::nb_db()
+            + Queue::nb_db()
+            + IndexMapper::nb_db()
+            + features::FeatureData::nb_db()
+            + 1 // chat-prompts
     }
 
     /// Create an index scheduler and start its run loop.
@@ -265,6 +287,7 @@ impl IndexScheduler {
         let features = features::FeatureData::new(&env, &mut wtxn, options.instance_features)?;
         let queue = Queue::new(&env, &mut wtxn, &options)?;
         let index_mapper = IndexMapper::new(&env, &mut wtxn, &options, budget)?;
+        let chat_settings = env.create_database(&mut wtxn, Some(CHAT_SETTINGS_DB_NAME))?;
         wtxn.commit()?;
 
         // allow unreachable_code to get rids of the warning in the case of a test build.
@@ -277,6 +300,9 @@ impl IndexScheduler {
             index_mapper,
             env,
             cleanup_enabled: options.cleanup_enabled,
+            experimental_no_edition_2024_for_dumps: options
+                .indexer_config
+                .experimental_no_edition_2024_for_dumps,
             webhook_url: options.webhook_url,
             webhook_authorization_header: options.webhook_authorization_header,
             embedders: Default::default(),
@@ -288,12 +314,17 @@ impl IndexScheduler {
             #[cfg(test)]
             run_loop_iteration: Arc::new(RwLock::new(0)),
             features,
+            chat_settings,
         };
 
         this.run();
         Ok(this)
     }
 
+    fn read_txn(&self) -> Result<RoTxn<WithoutTls>> {
+        self.env.read_txn().map_err(|e| e.into())
+    }
+
     /// Return `Ok(())` if the index scheduler is able to access one of its database.
     pub fn health(&self) -> Result<()> {
         let rtxn = self.env.read_txn()?;
@@ -370,15 +401,16 @@ impl IndexScheduler {
         }
     }
 
-    pub fn read_txn(&self) -> Result<RoTxn<WithoutTls>> {
-        self.env.read_txn().map_err(|e| e.into())
-    }
-
     /// Start the run loop for the given index scheduler.
     ///
     /// This function will execute in a different thread and must be called
     /// only once per index scheduler.
     fn run(&self) {
+        // If the number of batched tasks is 0, we don't need to run the scheduler at all.
+        // It will never be able to process any tasks.
+        if self.scheduler.max_number_of_batched_tasks == 0 {
+            return;
+        }
         let run = self.private_clone();
         std::thread::Builder::new()
             .name(String::from("scheduler"))
@@ -396,9 +428,9 @@ impl IndexScheduler {
                         Ok(Ok(TickOutcome::StopProcessingForever)) => break,
                         Ok(Err(e)) => {
                             tracing::error!("{e}");
-                            // Wait one second when an irrecoverable error occurs.
+                            // Wait when an irrecoverable error occurs.
                             if !e.is_recoverable() {
-                                std::thread::sleep(Duration::from_secs(1));
+                                std::thread::sleep(Duration::from_secs(10));
                             }
                         }
                         Err(_panic) => {
@@ -425,6 +457,17 @@ impl IndexScheduler {
         Ok(self.env.non_free_pages_size()?)
     }
 
+    /// Return the maximum possible database size
+    pub fn max_size(&self) -> Result<u64> {
+        Ok(self.env.info().map_size as u64)
+    }
+
+    /// Return the max size of task allowed until the task queue stop receiving.
+    pub fn remaining_size_until_task_queue_stop(&self) -> Result<u64> {
+        Ok((self.env.info().map_size as u64 * TASK_SCHEDULER_SIZE_THRESHOLD_PERCENT_INT / 100)
+            .saturating_sub(self.used_size()?))
+    }
+
     /// Return the index corresponding to the name.
     ///
     /// * If the index wasn't opened before, the index will be opened.
@@ -475,7 +518,7 @@ impl IndexScheduler {
 
     /// Returns the total number of indexes available for the specified filter.
     /// And a `Vec` of the index_uid + its stats
-    pub fn get_paginated_indexes_stats(
+    pub fn paginated_indexes_stats(
         &self,
         filters: &meilisearch_auth::AuthFilter,
         from: usize,
@@ -516,6 +559,24 @@ impl IndexScheduler {
         ret.map(|ret| (total, ret))
     }
 
+    /// Returns the total number of chat workspaces available ~~for the specified filter~~.
+    /// And a `Vec` of the workspace_uids
+    pub fn paginated_chat_workspace_uids(
+        &self,
+        from: usize,
+        limit: usize,
+    ) -> Result<(usize, Vec<String>)> {
+        let rtxn = self.read_txn()?;
+        let total = self.chat_settings.len(&rtxn)?;
+        let mut iter = self.chat_settings.iter(&rtxn)?.skip(from);
+        iter.by_ref()
+            .take(limit)
+            .map(|ret| ret.map_err(Error::from))
+            .map(|ret| ret.map(|(uid, _)| uid.to_string()))
+            .collect::<Result<Vec<_>, Error>>()
+            .map(|ret| (total as usize, ret))
+    }
+
     /// The returned structure contains:
     /// 1. The name of the property being observed can be `statuses`, `types`, or `indexes`.
     /// 2. The name of the specific data related to the property can be `enqueued` for the `statuses`, `settingsUpdate` for the `types`, or the name of the index for the `indexes`, for example.
@@ -540,6 +601,11 @@ impl IndexScheduler {
         Ok(nbr_index_processing_tasks > 0)
     }
 
+    /// Whether the index should use the old document indexer.
+    pub fn no_edition_2024_for_dumps(&self) -> bool {
+        self.experimental_no_edition_2024_for_dumps
+    }
+
     /// Return the tasks matching the query from the user's point of view along
     /// with the total number of tasks matching the query, ignoring from and limit.
     ///
@@ -625,9 +691,10 @@ impl IndexScheduler {
         task_id: Option<TaskId>,
         dry_run: bool,
     ) -> Result<Task> {
-        // if the task doesn't delete anything and 50% of the task queue is full, we must refuse to enqueue the incomming task
-        if !matches!(&kind, KindWithContent::TaskDeletion { tasks, .. } if !tasks.is_empty())
-            && (self.env.non_free_pages_size()? * 100) / self.env.info().map_size as u64 > 40
+        // if the task doesn't delete or cancel anything and 40% of the task queue is full, we must refuse to enqueue the incoming task
+        if !matches!(&kind, KindWithContent::TaskDeletion { tasks, .. } | KindWithContent::TaskCancelation { tasks, .. } if !tasks.is_empty())
+            && (self.env.non_free_pages_size()? * 100) / self.env.info().map_size as u64
+                > TASK_SCHEDULER_SIZE_THRESHOLD_PERCENT_INT
         {
             return Err(Error::NoSpaceLeftInTaskQueue);
         }
@@ -696,7 +763,7 @@ impl IndexScheduler {
                 written: usize,
             }
 
-            impl<'a, 'b> Read for TaskReader<'a, 'b> {
+            impl Read for TaskReader<'_, '_> {
                 fn read(&mut self, mut buf: &mut [u8]) -> std::io::Result<usize> {
                     if self.buffer.is_empty() {
                         match self.tasks.next() {
@@ -799,29 +866,42 @@ impl IndexScheduler {
         &self,
         index_uid: String,
         embedding_configs: Vec<IndexEmbeddingConfig>,
-    ) -> Result<EmbeddingConfigs> {
+    ) -> Result<RuntimeEmbedders> {
         let res: Result<_> = embedding_configs
             .into_iter()
             .map(
                 |IndexEmbeddingConfig {
                      name,
                      config: milli::vector::EmbeddingConfig { embedder_options, prompt, quantized },
-                     ..
-                 }| {
-                    let prompt = Arc::new(
-                        prompt
-                            .try_into()
-                            .map_err(meilisearch_types::milli::Error::from)
-                            .map_err(|err| Error::from_milli(err, Some(index_uid.clone())))?,
-                    );
+                     fragments,
+                 }|
+                 -> Result<(String, Arc<RuntimeEmbedder>)> {
+                    let document_template = prompt
+                        .try_into()
+                        .map_err(meilisearch_types::milli::Error::from)
+                        .map_err(|err| Error::from_milli(err, Some(index_uid.clone())))?;
+
+                    let fragments = fragments
+                        .into_inner()
+                        .into_iter()
+                        .map(|fragment| {
+                            let value = embedder_options.fragment(&fragment.name).unwrap();
+                            let template = JsonTemplate::new(value.clone()).unwrap();
+                            RuntimeFragment { name: fragment.name, id: fragment.id, template }
+                        })
+                        .collect();
                     // optimistically return existing embedder
                     {
                         let embedders = self.embedders.read().unwrap();
                         if let Some(embedder) = embedders.get(&embedder_options) {
-                            return Ok((
-                                name,
-                                (embedder.clone(), prompt, quantized.unwrap_or_default()),
+                            let runtime = Arc::new(RuntimeEmbedder::new(
+                                embedder.clone(),
+                                document_template,
+                                fragments,
+                                quantized.unwrap_or_default(),
                             ));
+
+                            return Ok((name, runtime));
                         }
                     }
 
@@ -837,11 +917,44 @@ impl IndexScheduler {
                         let mut embedders = self.embedders.write().unwrap();
                         embedders.insert(embedder_options, embedder.clone());
                     }
-                    Ok((name, (embedder, prompt, quantized.unwrap_or_default())))
+
+                    let runtime = Arc::new(RuntimeEmbedder::new(
+                        embedder.clone(),
+                        document_template,
+                        fragments,
+                        quantized.unwrap_or_default(),
+                    ));
+
+                    Ok((name, runtime))
                 },
             )
             .collect();
-        res.map(EmbeddingConfigs::new)
+        res.map(RuntimeEmbedders::new)
+    }
+
+    pub fn chat_settings(&self, uid: &str) -> Result<Option<ChatCompletionSettings>> {
+        let rtxn = self.env.read_txn()?;
+        self.chat_settings.get(&rtxn, uid).map_err(Into::into)
+    }
+
+    /// Return true if chat workspace exists.
+    pub fn chat_workspace_exists(&self, name: &str) -> Result<bool> {
+        let rtxn = self.env.read_txn()?;
+        Ok(self.chat_settings.remap_data_type::<DecodeIgnore>().get(&rtxn, name)?.is_some())
+    }
+
+    pub fn put_chat_settings(&self, uid: &str, settings: &ChatCompletionSettings) -> Result<()> {
+        let mut wtxn = self.env.write_txn()?;
+        self.chat_settings.put(&mut wtxn, uid, settings)?;
+        wtxn.commit()?;
+        Ok(())
+    }
+
+    pub fn delete_chat_settings(&self, uid: &str) -> Result<bool> {
+        let mut wtxn = self.env.write_txn()?;
+        let deleted = self.chat_settings.delete(&mut wtxn, uid)?;
+        wtxn.commit()?;
+        Ok(deleted)
     }
 }
 

crates/index-scheduler/src/processing.rs

@@ -74,6 +74,7 @@ make_enum_progress! {
 make_enum_progress! {
     pub enum TaskCancelationProgress {
         RetrievingTasks,
+        CancelingUpgrade,
         UpdatingTasks,
     }
 }
@@ -102,6 +103,7 @@ make_enum_progress! {
     pub enum DumpCreationProgress {
         StartTheDumpCreation,
         DumpTheApiKeys,
+        DumpTheChatCompletionSettings,
         DumpTheTasks,
         DumpTheBatches,
         DumpTheIndexes,
@@ -174,8 +176,17 @@ make_enum_progress! {
     }
 }
 
+make_enum_progress! {
+    pub enum Export {
+        EnsuringCorrectnessOfTheTarget,
+        ExportingTheSettings,
+        ExportingTheDocuments,
+    }
+}
+
 make_atomic_progress!(Task alias AtomicTaskStep => "task" );
 make_atomic_progress!(Document alias AtomicDocumentStep => "document" );
+make_atomic_progress!(Index alias AtomicIndexStep => "index" );
 make_atomic_progress!(Batch alias AtomicBatchStep => "batch" );
 make_atomic_progress!(UpdateFile alias AtomicUpdateFileStep => "update file" );
 

crates/index-scheduler/src/queue/batches.rs

@@ -179,9 +179,11 @@ impl BatchQueue {
                 progress: None,
                 details: batch.details,
                 stats: batch.stats,
+                embedder_stats: batch.embedder_stats.as_ref().into(),
                 started_at: batch.started_at,
                 finished_at: batch.finished_at,
                 enqueued_at: batch.enqueued_at,
+                stop_reason: batch.reason.to_string(),
             },
         )?;
 

crates/index-scheduler/src/queue/batches_test.rs

@@ -106,7 +106,7 @@ fn query_batches_simple() {
     batches[0].enqueued_at = None;
     // Insta cannot snapshot our batches because the batch stats contains an enum as key: https://github.com/mitsuhiko/insta/issues/689
     let batch = serde_json::to_string_pretty(&batches[0]).unwrap();
-    snapshot!(batch, @r#"
+    snapshot!(batch, @r###"
     {
       "uid": 0,
       "details": {
@@ -126,9 +126,10 @@ fn query_batches_simple() {
       },
       "startedAt": "1970-01-01T00:00:00Z",
       "finishedAt": null,
-      "enqueuedAt": null
+      "enqueuedAt": null,
+      "stopReason": "created batch containing only task with id 0 of type `indexCreation` that cannot be batched with any other task."
     }
-    "#);
+    "###);
 
     let query = Query { statuses: Some(vec![Status::Enqueued]), ..Default::default() };
     let (batches, _) = index_scheduler

crates/index-scheduler/src/queue/mod.rs

@@ -292,8 +292,6 @@ impl Queue {
             return Ok(task);
         }
 
-        // Get rid of the mutability.
-        let task = task;
         self.tasks.register(wtxn, &task)?;
 
         Ok(task)

crates/index-scheduler/src/queue/snapshots/batches_test.rs/query_batches_canceled_by/start.snap

@@ -1,6 +1,5 @@
 ---
 source: crates/index-scheduler/src/queue/batches_test.rs
-snapshot_kind: text
 ---
 ### Autobatching Enabled = true
 ### Processing batch None:
@@ -49,8 +48,8 @@ catto: { number_of_documents: 0, field_distribution: {} }
 [timestamp] [1,2,3,]
 ----------------------------------------------------------------------
 ### All Batches:
-0 {uid: 0, details: {"primaryKey":"mouse"}, stats: {"totalNbTasks":1,"status":{"succeeded":1},"types":{"indexCreation":1},"indexUids":{"catto":1}}, }
-1 {uid: 1, details: {"primaryKey":"sheep","matchedTasks":3,"canceledTasks":2,"originalFilter":"test_query","swaps":[{"indexes":["catto","doggo"]}]}, stats: {"totalNbTasks":3,"status":{"succeeded":1,"canceled":2},"types":{"indexCreation":1,"indexSwap":1,"taskCancelation":1},"indexUids":{"doggo":1}}, }
+0 {uid: 0, details: {"primaryKey":"mouse"}, stats: {"totalNbTasks":1,"status":{"succeeded":1},"types":{"indexCreation":1},"indexUids":{"catto":1}}, stop reason: "created batch containing only task with id 0 of type `indexCreation` that cannot be batched with any other task.", }
+1 {uid: 1, details: {"primaryKey":"sheep","matchedTasks":3,"canceledTasks":2,"originalFilter":"test_query","swaps":[{"indexes":["catto","doggo"]}]}, stats: {"totalNbTasks":3,"status":{"succeeded":1,"canceled":2},"types":{"indexCreation":1,"indexSwap":1,"taskCancelation":1},"indexUids":{"doggo":1}}, stop reason: "created batch containing only task with id 3 of type `taskCancelation` that cannot be batched with any other task.", }
 ----------------------------------------------------------------------
 ### Batch to tasks mapping:
 0 [0,]

crates/index-scheduler/src/queue/snapshots/batches_test.rs/query_batches_from_and_limit/processed_all_tasks.snap

@@ -1,6 +1,5 @@
 ---
 source: crates/index-scheduler/src/queue/batches_test.rs
-snapshot_kind: text
 ---
 ### Autobatching Enabled = true
 ### Processing batch None:
@@ -48,9 +47,9 @@ whalo: { number_of_documents: 0, field_distribution: {} }
 [timestamp] [2,]
 ----------------------------------------------------------------------
 ### All Batches:
-0 {uid: 0, details: {"primaryKey":"bone"}, stats: {"totalNbTasks":1,"status":{"succeeded":1},"types":{"indexCreation":1},"indexUids":{"doggo":1}}, }
-1 {uid: 1, details: {"primaryKey":"plankton"}, stats: {"totalNbTasks":1,"status":{"succeeded":1},"types":{"indexCreation":1},"indexUids":{"whalo":1}}, }
-2 {uid: 2, details: {"primaryKey":"his_own_vomit"}, stats: {"totalNbTasks":1,"status":{"succeeded":1},"types":{"indexCreation":1},"indexUids":{"catto":1}}, }
+0 {uid: 0, details: {"primaryKey":"bone"}, stats: {"totalNbTasks":1,"status":{"succeeded":1},"types":{"indexCreation":1},"indexUids":{"doggo":1}}, stop reason: "created batch containing only task with id 0 of type `indexCreation` that cannot be batched with any other task.", }
+1 {uid: 1, details: {"primaryKey":"plankton"}, stats: {"totalNbTasks":1,"status":{"succeeded":1},"types":{"indexCreation":1},"indexUids":{"whalo":1}}, stop reason: "created batch containing only task with id 1 of type `indexCreation` that cannot be batched with any other task.", }
+2 {uid: 2, details: {"primaryKey":"his_own_vomit"}, stats: {"totalNbTasks":1,"status":{"succeeded":1},"types":{"indexCreation":1},"indexUids":{"catto":1}}, stop reason: "created batch containing only task with id 2 of type `indexCreation` that cannot be batched with any other task.", }
 ----------------------------------------------------------------------
 ### Batch to tasks mapping:
 0 [0,]

crates/index-scheduler/src/queue/snapshots/batches_test.rs/query_batches_simple/after-advancing-a-bit.snap

@@ -1,11 +1,10 @@
 ---
 source: crates/index-scheduler/src/queue/batches_test.rs
-snapshot_kind: text
 ---
 ### Autobatching Enabled = true
 ### Processing batch Some(1):
 [1,]
-{uid: 1, details: {"primaryKey":"sheep"}, stats: {"totalNbTasks":1,"status":{"processing":1},"types":{"indexCreation":1},"indexUids":{"doggo":1}}, }
+{uid: 1, details: {"primaryKey":"sheep"}, stats: {"totalNbTasks":1,"status":{"processing":1},"types":{"indexCreation":1},"indexUids":{"doggo":1}}, stop reason: "created batch containing only task with id 1 of type `indexCreation` that cannot be batched with any other task.", }
 ----------------------------------------------------------------------
 ### All Tasks:
 0 {uid: 0, batch_uid: 0, status: succeeded, details: { primary_key: Some("mouse") }, kind: IndexCreation { index_uid: "catto", primary_key: Some("mouse") }}
@@ -43,7 +42,7 @@ catto: { number_of_documents: 0, field_distribution: {} }
 [timestamp] [0,]
 ----------------------------------------------------------------------
 ### All Batches:
-0 {uid: 0, details: {"primaryKey":"mouse"}, stats: {"totalNbTasks":1,"status":{"succeeded":1},"types":{"indexCreation":1},"indexUids":{"catto":1}}, }
+0 {uid: 0, details: {"primaryKey":"mouse"}, stats: {"totalNbTasks":1,"status":{"succeeded":1},"types":{"indexCreation":1},"indexUids":{"catto":1}}, stop reason: "created batch containing only task with id 0 of type `indexCreation` that cannot be batched with any other task.", }
 ----------------------------------------------------------------------
 ### Batch to tasks mapping:
 0 [0,]

crates/index-scheduler/src/queue/snapshots/batches_test.rs/query_batches_simple/end.snap

@@ -1,6 +1,5 @@
 ---
 source: crates/index-scheduler/src/queue/batches_test.rs
-snapshot_kind: text
 ---
 ### Autobatching Enabled = true
 ### Processing batch None:
@@ -48,9 +47,9 @@ doggo: { number_of_documents: 0, field_distribution: {} }
 [timestamp] [2,]
 ----------------------------------------------------------------------
 ### All Batches:
-0 {uid: 0, details: {"primaryKey":"mouse"}, stats: {"totalNbTasks":1,"status":{"succeeded":1},"types":{"indexCreation":1},"indexUids":{"catto":1}}, }
-1 {uid: 1, details: {"primaryKey":"sheep"}, stats: {"totalNbTasks":1,"status":{"succeeded":1},"types":{"indexCreation":1},"indexUids":{"doggo":1}}, }
-2 {uid: 2, details: {"primaryKey":"fish"}, stats: {"totalNbTasks":1,"status":{"failed":1},"types":{"indexCreation":1},"indexUids":{"whalo":1}}, }
+0 {uid: 0, details: {"primaryKey":"mouse"}, stats: {"totalNbTasks":1,"status":{"succeeded":1},"types":{"indexCreation":1},"indexUids":{"catto":1}}, stop reason: "created batch containing only task with id 0 of type `indexCreation` that cannot be batched with any other task.", }
+1 {uid: 1, details: {"primaryKey":"sheep"}, stats: {"totalNbTasks":1,"status":{"succeeded":1},"types":{"indexCreation":1},"indexUids":{"doggo":1}}, stop reason: "created batch containing only task with id 1 of type `indexCreation` that cannot be batched with any other task.", }
+2 {uid: 2, details: {"primaryKey":"fish"}, stats: {"totalNbTasks":1,"status":{"failed":1},"types":{"indexCreation":1},"indexUids":{"whalo":1}}, stop reason: "created batch containing only task with id 2 of type `indexCreation` that cannot be batched with any other task.", }
 ----------------------------------------------------------------------
 ### Batch to tasks mapping:
 0 [0,]

crates/index-scheduler/src/queue/snapshots/batches_test.rs/query_batches_special_rules/after-processing-everything.snap

@@ -1,6 +1,5 @@
 ---
 source: crates/index-scheduler/src/queue/batches_test.rs
-snapshot_kind: text
 ---
 ### Autobatching Enabled = true
 ### Processing batch None:
@@ -53,10 +52,10 @@ doggo: { number_of_documents: 0, field_distribution: {} }
 [timestamp] [3,]
 ----------------------------------------------------------------------
 ### All Batches:
-0 {uid: 0, details: {"primaryKey":"mouse"}, stats: {"totalNbTasks":1,"status":{"succeeded":1},"types":{"indexCreation":1},"indexUids":{"catto":1}}, }
-1 {uid: 1, details: {"primaryKey":"sheep"}, stats: {"totalNbTasks":1,"status":{"succeeded":1},"types":{"indexCreation":1},"indexUids":{"doggo":1}}, }
-2 {uid: 2, details: {"swaps":[{"indexes":["catto","doggo"]}]}, stats: {"totalNbTasks":1,"status":{"failed":1},"types":{"indexSwap":1},"indexUids":{}}, }
-3 {uid: 3, details: {"swaps":[{"indexes":["catto","whalo"]}]}, stats: {"totalNbTasks":1,"status":{"failed":1},"types":{"indexSwap":1},"indexUids":{}}, }
+0 {uid: 0, details: {"primaryKey":"mouse"}, stats: {"totalNbTasks":1,"status":{"succeeded":1},"types":{"indexCreation":1},"indexUids":{"catto":1}}, stop reason: "created batch containing only task with id 0 of type `indexCreation` that cannot be batched with any other task.", }
+1 {uid: 1, details: {"primaryKey":"sheep"}, stats: {"totalNbTasks":1,"status":{"succeeded":1},"types":{"indexCreation":1},"indexUids":{"doggo":1}}, stop reason: "created batch containing only task with id 1 of type `indexCreation` that cannot be batched with any other task.", }
+2 {uid: 2, details: {"swaps":[{"indexes":["catto","doggo"]}]}, stats: {"totalNbTasks":1,"status":{"failed":1},"types":{"indexSwap":1},"indexUids":{}}, stop reason: "created batch containing only task with id 2 of type `indexSwap` that cannot be batched with any other task.", }
+3 {uid: 3, details: {"swaps":[{"indexes":["catto","whalo"]}]}, stats: {"totalNbTasks":1,"status":{"failed":1},"types":{"indexSwap":1},"indexUids":{}}, stop reason: "created batch containing only task with id 3 of type `indexSwap` that cannot be batched with any other task.", }
 ----------------------------------------------------------------------
 ### Batch to tasks mapping:
 0 [0,]

crates/index-scheduler/src/queue/snapshots/tasks_test.rs/query_tasks_canceled_by/start.snap

@@ -1,6 +1,5 @@
 ---
 source: crates/index-scheduler/src/queue/tasks_test.rs
-snapshot_kind: text
 ---
 ### Autobatching Enabled = true
 ### Processing batch None:
@@ -49,8 +48,8 @@ catto: { number_of_documents: 0, field_distribution: {} }
 [timestamp] [1,2,3,]
 ----------------------------------------------------------------------
 ### All Batches:
-0 {uid: 0, details: {"primaryKey":"mouse"}, stats: {"totalNbTasks":1,"status":{"succeeded":1},"types":{"indexCreation":1},"indexUids":{"catto":1}}, }
-1 {uid: 1, details: {"primaryKey":"sheep","matchedTasks":3,"canceledTasks":2,"originalFilter":"test_query","swaps":[{"indexes":["catto","doggo"]}]}, stats: {"totalNbTasks":3,"status":{"succeeded":1,"canceled":2},"types":{"indexCreation":1,"indexSwap":1,"taskCancelation":1},"indexUids":{"doggo":1}}, }
+0 {uid: 0, details: {"primaryKey":"mouse"}, stats: {"totalNbTasks":1,"status":{"succeeded":1},"types":{"indexCreation":1},"indexUids":{"catto":1}}, stop reason: "created batch containing only task with id 0 of type `indexCreation` that cannot be batched with any other task.", }
+1 {uid: 1, details: {"primaryKey":"sheep","matchedTasks":3,"canceledTasks":2,"originalFilter":"test_query","swaps":[{"indexes":["catto","doggo"]}]}, stats: {"totalNbTasks":3,"status":{"succeeded":1,"canceled":2},"types":{"indexCreation":1,"indexSwap":1,"taskCancelation":1},"indexUids":{"doggo":1}}, stop reason: "created batch containing only task with id 3 of type `taskCancelation` that cannot be batched with any other task.", }
 ----------------------------------------------------------------------
 ### Batch to tasks mapping:
 0 [0,]

crates/index-scheduler/src/queue/snapshots/tasks_test.rs/query_tasks_from_and_limit/processed_all_tasks.snap

@@ -1,6 +1,5 @@
 ---
 source: crates/index-scheduler/src/queue/tasks_test.rs
-snapshot_kind: text
 ---
 ### Autobatching Enabled = true
 ### Processing batch None:
@@ -48,9 +47,9 @@ whalo: { number_of_documents: 0, field_distribution: {} }
 [timestamp] [2,]
 ----------------------------------------------------------------------
 ### All Batches:
-0 {uid: 0, details: {"primaryKey":"bone"}, stats: {"totalNbTasks":1,"status":{"succeeded":1},"types":{"indexCreation":1},"indexUids":{"doggo":1}}, }
-1 {uid: 1, details: {"primaryKey":"plankton"}, stats: {"totalNbTasks":1,"status":{"succeeded":1},"types":{"indexCreation":1},"indexUids":{"whalo":1}}, }
-2 {uid: 2, details: {"primaryKey":"his_own_vomit"}, stats: {"totalNbTasks":1,"status":{"succeeded":1},"types":{"indexCreation":1},"indexUids":{"catto":1}}, }
+0 {uid: 0, details: {"primaryKey":"bone"}, stats: {"totalNbTasks":1,"status":{"succeeded":1},"types":{"indexCreation":1},"indexUids":{"doggo":1}}, stop reason: "created batch containing only task with id 0 of type `indexCreation` that cannot be batched with any other task.", }
+1 {uid: 1, details: {"primaryKey":"plankton"}, stats: {"totalNbTasks":1,"status":{"succeeded":1},"types":{"indexCreation":1},"indexUids":{"whalo":1}}, stop reason: "created batch containing only task with id 1 of type `indexCreation` that cannot be batched with any other task.", }
+2 {uid: 2, details: {"primaryKey":"his_own_vomit"}, stats: {"totalNbTasks":1,"status":{"succeeded":1},"types":{"indexCreation":1},"indexUids":{"catto":1}}, stop reason: "created batch containing only task with id 2 of type `indexCreation` that cannot be batched with any other task.", }
 ----------------------------------------------------------------------
 ### Batch to tasks mapping:
 0 [0,]

crates/index-scheduler/src/queue/snapshots/tasks_test.rs/query_tasks_simple/end.snap

@@ -1,6 +1,5 @@
 ---
 source: crates/index-scheduler/src/queue/tasks_test.rs
-snapshot_kind: text
 ---
 ### Autobatching Enabled = true
 ### Processing batch None:
@@ -48,9 +47,9 @@ doggo: { number_of_documents: 0, field_distribution: {} }
 [timestamp] [2,]
 ----------------------------------------------------------------------
 ### All Batches:
-0 {uid: 0, details: {"primaryKey":"mouse"}, stats: {"totalNbTasks":1,"status":{"succeeded":1},"types":{"indexCreation":1},"indexUids":{"catto":1}}, }
-1 {uid: 1, details: {"primaryKey":"sheep"}, stats: {"totalNbTasks":1,"status":{"succeeded":1},"types":{"indexCreation":1},"indexUids":{"doggo":1}}, }
-2 {uid: 2, details: {"primaryKey":"fish"}, stats: {"totalNbTasks":1,"status":{"failed":1},"types":{"indexCreation":1},"indexUids":{"whalo":1}}, }
+0 {uid: 0, details: {"primaryKey":"mouse"}, stats: {"totalNbTasks":1,"status":{"succeeded":1},"types":{"indexCreation":1},"indexUids":{"catto":1}}, stop reason: "created batch containing only task with id 0 of type `indexCreation` that cannot be batched with any other task.", }
+1 {uid: 1, details: {"primaryKey":"sheep"}, stats: {"totalNbTasks":1,"status":{"succeeded":1},"types":{"indexCreation":1},"indexUids":{"doggo":1}}, stop reason: "created batch containing only task with id 1 of type `indexCreation` that cannot be batched with any other task.", }
+2 {uid: 2, details: {"primaryKey":"fish"}, stats: {"totalNbTasks":1,"status":{"failed":1},"types":{"indexCreation":1},"indexUids":{"whalo":1}}, stop reason: "created batch containing only task with id 2 of type `indexCreation` that cannot be batched with any other task.", }
 ----------------------------------------------------------------------
 ### Batch to tasks mapping:
 0 [0,]

crates/index-scheduler/src/queue/tasks.rs

@@ -315,7 +315,7 @@ impl Queue {
         if let Some(batch_uids) = batch_uids {
             let mut batch_tasks = RoaringBitmap::new();
             for batch_uid in batch_uids {
-                if processing_batch.as_ref().map_or(false, |batch| batch.uid == *batch_uid) {
+                if processing_batch.as_ref().is_some_and(|batch| batch.uid == *batch_uid) {
                     batch_tasks |= &**processing_tasks;
                 } else {
                     batch_tasks |= self.tasks_in_batch(rtxn, *batch_uid)?;

crates/index-scheduler/src/queue/test.rs

@@ -364,7 +364,7 @@ fn test_task_queue_is_full() {
     // we won't be able to test this error in an integration test thus as a best effort test I still ensure the error return the expected error code
     snapshot!(format!("{:?}", result.error_code()), @"NoSpaceLeftOnDevice");
 
-    // Even the task deletion that doesn't delete anything shouldn't be accepted
+    // Even the task deletion and cancelation that don't delete anything should be refused
     let result = index_scheduler
         .register(
             KindWithContent::TaskDeletion { query: S("test"), tasks: RoaringBitmap::new() },
@@ -373,10 +373,39 @@ fn test_task_queue_is_full() {
         )
         .unwrap_err();
     snapshot!(result, @"Meilisearch cannot receive write operations because the limit of the task database has been reached. Please delete tasks to continue performing write operations.");
+    let result = index_scheduler
+        .register(
+            KindWithContent::TaskCancelation { query: S("test"), tasks: RoaringBitmap::new() },
+            None,
+            false,
+        )
+        .unwrap_err();
+    snapshot!(result, @"Meilisearch cannot receive write operations because the limit of the task database has been reached. Please delete tasks to continue performing write operations.");
+
     // we won't be able to test this error in an integration test thus as a best effort test I still ensure the error return the expected error code
     snapshot!(format!("{:?}", result.error_code()), @"NoSpaceLeftOnDevice");
 
-    // But a task deletion that delete something should works
+    // But a task cancelation that cancel something should work
+    index_scheduler
+        .register(
+            KindWithContent::TaskCancelation { query: S("test"), tasks: (0..100).collect() },
+            None,
+            false,
+        )
+        .unwrap();
+    handle.advance_one_successful_batch();
+
+    // But we should still be forbidden from enqueuing new tasks
+    let result = index_scheduler
+        .register(
+            KindWithContent::IndexCreation { index_uid: S("doggo"), primary_key: None },
+            None,
+            false,
+        )
+        .unwrap_err();
+    snapshot!(result, @"Meilisearch cannot receive write operations because the limit of the task database has been reached. Please delete tasks to continue performing write operations.");
+
+    // And a task deletion that delete something should works
     index_scheduler
         .register(
             KindWithContent::TaskDeletion { query: S("test"), tasks: (0..100).collect() },

crates/index-scheduler/src/scheduler/autobatcher.rs

@@ -5,9 +5,10 @@ tasks affecting a single index into a [batch](crate::batch::Batch).
 The main function of the autobatcher is [`next_autobatch`].
 */
 
-use meilisearch_types::tasks::TaskId;
 use std::ops::ControlFlow::{self, Break, Continue};
 
+use meilisearch_types::tasks::{BatchStopReason, PrimaryKeyMismatchReason, TaskId};
+
 use crate::KindWithContent;
 
 /// Succinctly describes a task's [`Kind`](meilisearch_types::tasks::Kind)
@@ -70,6 +71,7 @@ impl From<KindWithContent> for AutobatchKind {
             KindWithContent::TaskCancelation { .. }
             | KindWithContent::TaskDeletion { .. }
             | KindWithContent::DumpCreation { .. }
+            | KindWithContent::Export { .. }
             | KindWithContent::UpgradeDatabase { .. }
             | KindWithContent::SnapshotCreation => {
                 panic!("The autobatcher should never be called with tasks that don't apply to an index.")
@@ -145,16 +147,42 @@ impl BatchKind {
     // TODO use an AutoBatchKind as input
     pub fn new(
         task_id: TaskId,
-        kind: KindWithContent,
+        kind_with_content: KindWithContent,
         primary_key: Option<&str>,
-    ) -> (ControlFlow<BatchKind, BatchKind>, bool) {
+    ) -> (ControlFlow<(BatchKind, BatchStopReason), BatchKind>, bool) {
         use AutobatchKind as K;
 
-        match AutobatchKind::from(kind) {
-            K::IndexCreation => (Break(BatchKind::IndexCreation { id: task_id }), true),
-            K::IndexDeletion => (Break(BatchKind::IndexDeletion { ids: vec![task_id] }), false),
-            K::IndexUpdate => (Break(BatchKind::IndexUpdate { id: task_id }), false),
-            K::IndexSwap => (Break(BatchKind::IndexSwap { id: task_id }), false),
+        let kind = kind_with_content.as_kind();
+
+        match AutobatchKind::from(kind_with_content) {
+            K::IndexCreation => (
+                Break((
+                    BatchKind::IndexCreation { id: task_id },
+                    BatchStopReason::TaskCannotBeBatched { kind, id: task_id },
+                )),
+                true,
+            ),
+            K::IndexDeletion => (
+                Break((
+                    BatchKind::IndexDeletion { ids: vec![task_id] },
+                    BatchStopReason::IndexDeletion { id: task_id },
+                )),
+                false,
+            ),
+            K::IndexUpdate => (
+                Break((
+                    BatchKind::IndexUpdate { id: task_id },
+                    BatchStopReason::TaskCannotBeBatched { kind, id: task_id },
+                )),
+                false,
+            ),
+            K::IndexSwap => (
+                Break((
+                    BatchKind::IndexSwap { id: task_id },
+                    BatchStopReason::TaskCannotBeBatched { kind, id: task_id },
+                )),
+                false,
+            ),
             K::DocumentClear => (Continue(BatchKind::DocumentClear { ids: vec![task_id] }), false),
             K::DocumentImport { allow_index_creation, primary_key: pk }
                 if primary_key.is_none() || pk.is_none() || primary_key == pk.as_deref() =>
@@ -169,15 +197,28 @@ impl BatchKind {
                 )
             }
             // if the primary key set in the task was different than ours we should stop and make this batch fail asap.
-            K::DocumentImport { allow_index_creation, primary_key } => (
-                Break(BatchKind::DocumentOperation {
-                    allow_index_creation,
-                    primary_key,
-                    operation_ids: vec![task_id],
-                }),
+            K::DocumentImport { allow_index_creation, primary_key: pk } => (
+                Break((
+                    BatchKind::DocumentOperation {
+                        allow_index_creation,
+                        primary_key: pk.clone(),
+                        operation_ids: vec![task_id],
+                    },
+                    BatchStopReason::PrimaryKeyIndexMismatch {
+                        id: task_id,
+                        in_index: primary_key.unwrap().to_owned(),
+                        in_task: pk.unwrap(),
+                    },
+                )),
                 allow_index_creation,
             ),
-            K::DocumentEdition => (Break(BatchKind::DocumentEdition { id: task_id }), false),
+            K::DocumentEdition => (
+                Break((
+                    BatchKind::DocumentEdition { id: task_id },
+                    BatchStopReason::TaskCannotBeBatched { kind, id: task_id },
+                )),
+                false,
+            ),
             K::DocumentDeletion { by_filter: includes_by_filter } => (
                 Continue(BatchKind::DocumentDeletion {
                     deletion_ids: vec![task_id],
@@ -197,43 +238,60 @@ impl BatchKind {
     /// To ease the writing of the code. `true` can be returned when you don't need to create an index
     /// but false can't be returned if you needs to create an index.
     #[rustfmt::skip]
-    fn accumulate(self, id: TaskId, kind: AutobatchKind, index_already_exists: bool, primary_key: Option<&str>) -> ControlFlow<BatchKind, BatchKind> {
+    fn accumulate(self, id: TaskId, kind_with_content: KindWithContent, index_already_exists: bool, primary_key: Option<&str>) -> ControlFlow<(BatchKind, BatchStopReason), BatchKind> {
         use AutobatchKind as K;
 
-        match (self, kind) {
+        let kind = kind_with_content.as_kind();
+        let autobatch_kind = AutobatchKind::from(kind_with_content);
+
+        let pk: Option<String> = match (self.primary_key(), autobatch_kind.primary_key(), primary_key) {
+            // 1. If incoming task don't interact with primary key -> we can continue
+            (batch_pk, None | Some(None), _) => {
+                batch_pk.flatten().map(ToOwned::to_owned)
+            },
+            // 2.1 If we already have a primary-key ->
+            // 2.1.1 If the task we're trying to accumulate have a pk it must be equal to our primary key
+            (_batch_pk, Some(Some(task_pk)), Some(index_pk)) => if task_pk == index_pk {
+                Some(task_pk.to_owned())
+            } else {
+                return Break((self, BatchStopReason::PrimaryKeyMismatch {
+                    id,
+                    reason: PrimaryKeyMismatchReason::TaskPrimaryKeyDifferFromIndexPrimaryKey {
+                        task_pk: task_pk.to_owned(),
+                        index_pk: index_pk.to_owned(),
+                    },
+                }))
+            },
+            // 2.2 If we don't have a primary-key ->
+            // 2.2.2 If the batch is set to Some(None), the task should be too
+            (Some(None), Some(Some(task_pk)), None) => return Break((self, BatchStopReason::PrimaryKeyMismatch {
+                id,
+                reason: PrimaryKeyMismatchReason::CannotInterfereWithPrimaryKeyGuessing {
+                    task_pk: task_pk.to_owned(),
+                },
+            })),
+            (Some(Some(batch_pk)), Some(Some(task_pk)), None) => if task_pk == batch_pk {
+                Some(task_pk.to_owned())
+            } else {
+                let batch_pk = batch_pk.to_owned();
+                let task_pk = task_pk.to_owned();
+                return Break((self, BatchStopReason::PrimaryKeyMismatch {
+                    id,
+                    reason: PrimaryKeyMismatchReason::TaskPrimaryKeyDifferFromCurrentBatchPrimaryKey {
+                        batch_pk,
+                        task_pk
+                    },
+                }))
+            },
+            (None, Some(Some(task_pk)), None) => Some(task_pk.to_owned())
+        };
+
+        match (self, autobatch_kind) {
             // We don't batch any of these operations
-            (this, K::IndexCreation | K::IndexUpdate | K::IndexSwap | K::DocumentEdition) => Break(this),
+            (this, K::IndexCreation | K::IndexUpdate | K::IndexSwap | K::DocumentEdition) => Break((this, BatchStopReason::TaskCannotBeBatched { kind, id })),
             // We must not batch tasks that don't have the same index creation rights if the index doesn't already exists.
             (this, kind) if !index_already_exists && this.allow_index_creation() == Some(false) && kind.allow_index_creation() == Some(true) => {
-                Break(this)
-            },
-            // NOTE: We need to negate the whole condition since we're checking if we need to break instead of continue.
-            //       I wrote it this way because it's easier to understand than the other way around.
-            (this, kind) if !(
-                // 1. If both task don't interact with primary key -> we can continue
-                (this.primary_key().is_none() && kind.primary_key().is_none()) ||
-                // 2. Else ->
-                (
-                    // 2.1 If we already have a primary-key ->
-                    (
-                        primary_key.is_some() &&
-                        // 2.1.1 If the task we're trying to accumulate have a pk it must be equal to our primary key
-                        // 2.1.2 If the task don't have a primary-key -> we can continue
-                        kind.primary_key().map_or(true, |pk| pk == primary_key)
-                    ) ||
-                    // 2.2 If we don't have a primary-key ->
-                    (
-                        // 2.2.1 If both the batch and the task have a primary key they should be equal
-                        // 2.2.2 If the batch is set to Some(None), the task should be too
-                        // 2.2.3 If the batch is set to None -> we can continue
-                        this.primary_key().zip(kind.primary_key()).map_or(true, |(this, kind)| this == kind)
-                    )
-                )
-
-                ) // closing the negation
-
-            => {
-                Break(this)
+                Break((this, BatchStopReason::IndexCreationMismatch { id }))
             },
             // The index deletion can batch with everything but must stop after
             (
@@ -244,7 +302,7 @@ impl BatchKind {
                 K::IndexDeletion,
             ) => {
                 ids.push(id);
-                Break(BatchKind::IndexDeletion { ids })
+                Break((BatchKind::IndexDeletion { ids }, BatchStopReason::IndexDeletion { id }))
             }
             (
                 BatchKind::ClearAndSettings { settings_ids: mut ids, allow_index_creation: _, mut other },
@@ -252,7 +310,7 @@ impl BatchKind {
             ) => {
                 ids.push(id);
                 ids.append(&mut other);
-                Break(BatchKind::IndexDeletion { ids })
+                Break((BatchKind::IndexDeletion { ids }, BatchStopReason::IndexDeletion { id }))
             }
 
             (
@@ -265,7 +323,7 @@ impl BatchKind {
             (
                 this @ BatchKind::DocumentClear { .. },
                 K::DocumentImport { .. } | K::Settings { .. },
-            ) => Break(this),
+            ) => Break((this, BatchStopReason::DocumentOperationWithSettings { id })),
             (
                 BatchKind::DocumentOperation { allow_index_creation: _, primary_key: _, mut operation_ids },
                 K::DocumentClear,
@@ -277,7 +335,7 @@ impl BatchKind {
             // we can autobatch different kind of document operations and mix replacements with updates
             (
                 BatchKind::DocumentOperation { allow_index_creation, primary_key: _, mut operation_ids },
-                K::DocumentImport { primary_key: pk, .. },
+                K::DocumentImport { primary_key: _, .. },
             ) => {
                 operation_ids.push(id);
                 Continue(BatchKind::DocumentOperation {
@@ -287,15 +345,15 @@ impl BatchKind {
                 })
             }
             (
-                BatchKind::DocumentOperation { allow_index_creation, primary_key, mut operation_ids },
+                BatchKind::DocumentOperation { allow_index_creation, primary_key: _, mut operation_ids },
                 K::DocumentDeletion { by_filter: false },
             ) => {
                 operation_ids.push(id);
 
                 Continue(BatchKind::DocumentOperation {
                     allow_index_creation,
-                    primary_key,
                     operation_ids,
+                    primary_key: pk,
                 })
             }
             // We can't batch a document operation with a delete by filter
@@ -303,12 +361,12 @@ impl BatchKind {
                 this @ BatchKind::DocumentOperation { .. },
                 K::DocumentDeletion { by_filter: true },
             ) => {
-                Break(this)
+                Break((this, BatchStopReason::DocumentOperationWithDeletionByFilter { id }))
             }
             (
                 this @ BatchKind::DocumentOperation { .. },
                 K::Settings { .. },
-            ) => Break(this),
+            ) => Break((this, BatchStopReason::DocumentOperationWithSettings { id })),
 
             (BatchKind::DocumentDeletion { mut deletion_ids, includes_by_filter: _ }, K::DocumentClear) => {
                 deletion_ids.push(id);
@@ -318,7 +376,7 @@ impl BatchKind {
             (
                 this @ BatchKind::DocumentDeletion { deletion_ids: _, includes_by_filter: true },
                 K::DocumentImport { .. }
-            ) => Break(this),
+            ) => Break((this, BatchStopReason::DeletionByFilterWithDocumentOperation { id })),
             // we can autobatch the deletion and import if the index already exists
             (
                 BatchKind::DocumentDeletion { mut deletion_ids, includes_by_filter: false },
@@ -345,18 +403,18 @@ impl BatchKind {
                     operation_ids: deletion_ids,
                 })
             }
-            // we can't autobatch a deletion and an import if the index does not exists but would be created by an addition
+            // we can't autobatch a deletion and an import if the index does not exist but would be created by an addition
             (
                 this @ BatchKind::DocumentDeletion { .. },
                 K::DocumentImport { .. }
             ) => {
-                Break(this)
+                Break((this, BatchStopReason::IndexCreationMismatch { id }))
             }
             (BatchKind::DocumentDeletion { mut deletion_ids, includes_by_filter }, K::DocumentDeletion { by_filter }) => {
                 deletion_ids.push(id);
                 Continue(BatchKind::DocumentDeletion { deletion_ids, includes_by_filter: includes_by_filter | by_filter })
             }
-            (this @ BatchKind::DocumentDeletion { .. }, K::Settings { .. }) => Break(this),
+            (this @ BatchKind::DocumentDeletion { .. }, K::Settings { .. }) => Break((this, BatchStopReason::DocumentOperationWithSettings { id })),
 
             (
                 BatchKind::Settings { settings_ids, allow_index_creation },
@@ -369,7 +427,7 @@ impl BatchKind {
             (
                 this @ BatchKind::Settings { .. },
                 K::DocumentImport { .. } | K::DocumentDeletion { .. },
-            ) => Break(this),
+            ) => Break((this, BatchStopReason::SettingsWithDocumentOperation { id })),
             (
                 BatchKind::Settings { mut settings_ids, allow_index_creation },
                 K::Settings { .. },
@@ -392,7 +450,7 @@ impl BatchKind {
                     allow_index_creation,
                 })
             }
-            (this @ BatchKind::ClearAndSettings { .. }, K::DocumentImport { .. }) => Break(this),
+            (this @ BatchKind::ClearAndSettings { .. }, K::DocumentImport { .. }) => Break((this, BatchStopReason::SettingsWithDocumentOperation { id })),
             (
                 BatchKind::ClearAndSettings {
                     mut other,
@@ -448,7 +506,7 @@ pub fn autobatch(
     enqueued: Vec<(TaskId, KindWithContent)>,
     index_already_exists: bool,
     primary_key: Option<&str>,
-) -> Option<(BatchKind, bool)> {
+) -> Option<(BatchKind, bool, Option<BatchStopReason>)> {
     let mut enqueued = enqueued.into_iter();
     let (id, kind) = enqueued.next()?;
 
@@ -457,18 +515,22 @@ pub fn autobatch(
 
     let (mut acc, must_create_index) = match BatchKind::new(id, kind, primary_key) {
         (Continue(acc), create) => (acc, create),
-        (Break(acc), create) => return Some((acc, create)),
+        (Break((acc, batch_stop_reason)), create) => {
+            return Some((acc, create, Some(batch_stop_reason)))
+        }
     };
 
     // if an index has been created in the previous step we can consider it as existing.
     index_exist |= must_create_index;
 
-    for (id, kind) in enqueued {
-        acc = match acc.accumulate(id, kind.into(), index_exist, primary_key) {
+    for (id, kind_with_content) in enqueued {
+        acc = match acc.accumulate(id, kind_with_content, index_exist, primary_key) {
             Continue(acc) => acc,
-            Break(acc) => return Some((acc, must_create_index)),
+            Break((acc, batch_stop_reason)) => {
+                return Some((acc, must_create_index, Some(batch_stop_reason)))
+            }
         };
     }
 
-    Some((acc, must_create_index))
+    Some((acc, must_create_index, None))
 }

crates/index-scheduler/src/scheduler/autobatcher_test.rs

@@ -1,7 +1,7 @@
 use meilisearch_types::milli::update::IndexDocumentsMethod::{
     self, ReplaceDocuments, UpdateDocuments,
 };
-use meilisearch_types::tasks::{IndexSwap, KindWithContent};
+use meilisearch_types::tasks::{BatchStopReason, IndexSwap, KindWithContent};
 use uuid::Uuid;
 
 use self::autobatcher::{autobatch, BatchKind};
@@ -20,7 +20,7 @@ fn autobatch_from(
     index_already_exists: bool,
     primary_key: Option<&str>,
     input: impl IntoIterator<Item = KindWithContent>,
-) -> Option<(BatchKind, bool)> {
+) -> Option<(BatchKind, bool, Option<BatchStopReason>)> {
     autobatch(
         input.into_iter().enumerate().map(|(id, kind)| (id as TaskId, kind)).collect(),
         index_already_exists,
@@ -92,304 +92,304 @@ fn idx_swap() -> KindWithContent {
 fn autobatch_simple_operation_together() {
     // we can autobatch one or multiple `ReplaceDocuments` together.
     // if the index exists.
-    debug_snapshot!(autobatch_from(true, None, [doc_imp(ReplaceDocuments, true, None)]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0] }, true))");
-    debug_snapshot!(autobatch_from(true, None, [doc_imp(ReplaceDocuments, false, None)]), @"Some((DocumentOperation { allow_index_creation: false, primary_key: None, operation_ids: [0] }, false))");
-    debug_snapshot!(autobatch_from(true, None, [doc_imp(ReplaceDocuments, true, None), doc_imp( ReplaceDocuments, true , None), doc_imp(ReplaceDocuments, true , None)]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0, 1, 2] }, true))");
-    debug_snapshot!(autobatch_from(true, None, [doc_imp(ReplaceDocuments, false, None), doc_imp( ReplaceDocuments, false , None), doc_imp(ReplaceDocuments, false , None)]), @"Some((DocumentOperation { allow_index_creation: false, primary_key: None, operation_ids: [0, 1, 2] }, false))");
+    debug_snapshot!(autobatch_from(true, None, [doc_imp(ReplaceDocuments, true, None)]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0] }, true, None))");
+    debug_snapshot!(autobatch_from(true, None, [doc_imp(ReplaceDocuments, false, None)]), @"Some((DocumentOperation { allow_index_creation: false, primary_key: None, operation_ids: [0] }, false, None))");
+    debug_snapshot!(autobatch_from(true, None, [doc_imp(ReplaceDocuments, true, None), doc_imp( ReplaceDocuments, true , None), doc_imp(ReplaceDocuments, true , None)]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0, 1, 2] }, true, None))");
+    debug_snapshot!(autobatch_from(true, None, [doc_imp(ReplaceDocuments, false, None), doc_imp( ReplaceDocuments, false , None), doc_imp(ReplaceDocuments, false , None)]), @"Some((DocumentOperation { allow_index_creation: false, primary_key: None, operation_ids: [0, 1, 2] }, false, None))");
 
     // if it doesn't exists.
-    debug_snapshot!(autobatch_from(false,None,  [doc_imp(ReplaceDocuments, true, None)]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0] }, true))");
-    debug_snapshot!(autobatch_from(false,None,  [doc_imp(ReplaceDocuments, false, None)]), @"Some((DocumentOperation { allow_index_creation: false, primary_key: None, operation_ids: [0] }, false))");
-    debug_snapshot!(autobatch_from(false,None,  [doc_imp(ReplaceDocuments, true, None), doc_imp( ReplaceDocuments, true , None), doc_imp(ReplaceDocuments, true , None)]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0, 1, 2] }, true))");
-    debug_snapshot!(autobatch_from(false,None,  [doc_imp(ReplaceDocuments, false, None), doc_imp( ReplaceDocuments, true , None), doc_imp(ReplaceDocuments, true , None)]), @"Some((DocumentOperation { allow_index_creation: false, primary_key: None, operation_ids: [0] }, false))");
+    debug_snapshot!(autobatch_from(false,None,  [doc_imp(ReplaceDocuments, true, None)]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0] }, true, None))");
+    debug_snapshot!(autobatch_from(false,None,  [doc_imp(ReplaceDocuments, false, None)]), @"Some((DocumentOperation { allow_index_creation: false, primary_key: None, operation_ids: [0] }, false, None))");
+    debug_snapshot!(autobatch_from(false,None,  [doc_imp(ReplaceDocuments, true, None), doc_imp( ReplaceDocuments, true , None), doc_imp(ReplaceDocuments, true , None)]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0, 1, 2] }, true, None))");
+    debug_snapshot!(autobatch_from(false,None,  [doc_imp(ReplaceDocuments, false, None), doc_imp( ReplaceDocuments, true , None), doc_imp(ReplaceDocuments, true , None)]), @"Some((DocumentOperation { allow_index_creation: false, primary_key: None, operation_ids: [0] }, false, Some(IndexCreationMismatch { id: 1 })))");
 
     // we can autobatch one or multiple `UpdateDocuments` together.
     // if the index exists.
-    debug_snapshot!(autobatch_from(true, None, [doc_imp(UpdateDocuments, true, None)]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0] }, true))");
-    debug_snapshot!(autobatch_from(true, None, [doc_imp(UpdateDocuments, true, None), doc_imp(UpdateDocuments, true, None), doc_imp(UpdateDocuments, true, None)]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0, 1, 2] }, true))");
-    debug_snapshot!(autobatch_from(true, None, [doc_imp(UpdateDocuments, false, None)]), @"Some((DocumentOperation { allow_index_creation: false, primary_key: None, operation_ids: [0] }, false))");
-    debug_snapshot!(autobatch_from(true, None, [doc_imp(UpdateDocuments, false, None), doc_imp(UpdateDocuments, false, None), doc_imp(UpdateDocuments, false, None)]), @"Some((DocumentOperation { allow_index_creation: false, primary_key: None, operation_ids: [0, 1, 2] }, false))");
+    debug_snapshot!(autobatch_from(true, None, [doc_imp(UpdateDocuments, true, None)]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0] }, true, None))");
+    debug_snapshot!(autobatch_from(true, None, [doc_imp(UpdateDocuments, true, None), doc_imp(UpdateDocuments, true, None), doc_imp(UpdateDocuments, true, None)]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0, 1, 2] }, true, None))");
+    debug_snapshot!(autobatch_from(true, None, [doc_imp(UpdateDocuments, false, None)]), @"Some((DocumentOperation { allow_index_creation: false, primary_key: None, operation_ids: [0] }, false, None))");
+    debug_snapshot!(autobatch_from(true, None, [doc_imp(UpdateDocuments, false, None), doc_imp(UpdateDocuments, false, None), doc_imp(UpdateDocuments, false, None)]), @"Some((DocumentOperation { allow_index_creation: false, primary_key: None, operation_ids: [0, 1, 2] }, false, None))");
 
     // if it doesn't exists.
-    debug_snapshot!(autobatch_from(false,None,  [doc_imp(UpdateDocuments, true, None)]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0] }, true))");
-    debug_snapshot!(autobatch_from(false,None,  [doc_imp(UpdateDocuments, true, None), doc_imp(UpdateDocuments, true, None), doc_imp(UpdateDocuments, true, None)]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0, 1, 2] }, true))");
-    debug_snapshot!(autobatch_from(false,None,  [doc_imp(UpdateDocuments, false, None)]), @"Some((DocumentOperation { allow_index_creation: false, primary_key: None, operation_ids: [0] }, false))");
-    debug_snapshot!(autobatch_from(false,None,  [doc_imp(UpdateDocuments, false, None), doc_imp(UpdateDocuments, false, None), doc_imp(UpdateDocuments, false, None)]), @"Some((DocumentOperation { allow_index_creation: false, primary_key: None, operation_ids: [0, 1, 2] }, false))");
+    debug_snapshot!(autobatch_from(false,None,  [doc_imp(UpdateDocuments, true, None)]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0] }, true, None))");
+    debug_snapshot!(autobatch_from(false,None,  [doc_imp(UpdateDocuments, true, None), doc_imp(UpdateDocuments, true, None), doc_imp(UpdateDocuments, true, None)]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0, 1, 2] }, true, None))");
+    debug_snapshot!(autobatch_from(false,None,  [doc_imp(UpdateDocuments, false, None)]), @"Some((DocumentOperation { allow_index_creation: false, primary_key: None, operation_ids: [0] }, false, None))");
+    debug_snapshot!(autobatch_from(false,None,  [doc_imp(UpdateDocuments, false, None), doc_imp(UpdateDocuments, false, None), doc_imp(UpdateDocuments, false, None)]), @"Some((DocumentOperation { allow_index_creation: false, primary_key: None, operation_ids: [0, 1, 2] }, false, None))");
 
     // we can autobatch one or multiple DocumentDeletion together
-    debug_snapshot!(autobatch_from(true, None, [doc_del()]), @"Some((DocumentDeletion { deletion_ids: [0], includes_by_filter: false }, false))");
-    debug_snapshot!(autobatch_from(true, None, [doc_del(), doc_del(), doc_del()]), @"Some((DocumentDeletion { deletion_ids: [0, 1, 2], includes_by_filter: false }, false))");
-    debug_snapshot!(autobatch_from(false,None,  [doc_del()]), @"Some((DocumentDeletion { deletion_ids: [0], includes_by_filter: false }, false))");
-    debug_snapshot!(autobatch_from(false,None,  [doc_del(), doc_del(), doc_del()]), @"Some((DocumentDeletion { deletion_ids: [0, 1, 2], includes_by_filter: false }, false))");
+    debug_snapshot!(autobatch_from(true, None, [doc_del()]), @"Some((DocumentDeletion { deletion_ids: [0], includes_by_filter: false }, false, None))");
+    debug_snapshot!(autobatch_from(true, None, [doc_del(), doc_del(), doc_del()]), @"Some((DocumentDeletion { deletion_ids: [0, 1, 2], includes_by_filter: false }, false, None))");
+    debug_snapshot!(autobatch_from(false,None,  [doc_del()]), @"Some((DocumentDeletion { deletion_ids: [0], includes_by_filter: false }, false, None))");
+    debug_snapshot!(autobatch_from(false,None,  [doc_del(), doc_del(), doc_del()]), @"Some((DocumentDeletion { deletion_ids: [0, 1, 2], includes_by_filter: false }, false, None))");
 
     // we can autobatch one or multiple DocumentDeletionByFilter together
-    debug_snapshot!(autobatch_from(true, None, [doc_del_fil()]), @"Some((DocumentDeletion { deletion_ids: [0], includes_by_filter: true }, false))");
-    debug_snapshot!(autobatch_from(true, None, [doc_del_fil(), doc_del_fil(), doc_del_fil()]), @"Some((DocumentDeletion { deletion_ids: [0, 1, 2], includes_by_filter: true }, false))");
-    debug_snapshot!(autobatch_from(false,None,  [doc_del_fil()]), @"Some((DocumentDeletion { deletion_ids: [0], includes_by_filter: true }, false))");
-    debug_snapshot!(autobatch_from(false,None,  [doc_del_fil(), doc_del_fil(), doc_del_fil()]), @"Some((DocumentDeletion { deletion_ids: [0, 1, 2], includes_by_filter: true }, false))");
+    debug_snapshot!(autobatch_from(true, None, [doc_del_fil()]), @"Some((DocumentDeletion { deletion_ids: [0], includes_by_filter: true }, false, None))");
+    debug_snapshot!(autobatch_from(true, None, [doc_del_fil(), doc_del_fil(), doc_del_fil()]), @"Some((DocumentDeletion { deletion_ids: [0, 1, 2], includes_by_filter: true }, false, None))");
+    debug_snapshot!(autobatch_from(false,None,  [doc_del_fil()]), @"Some((DocumentDeletion { deletion_ids: [0], includes_by_filter: true }, false, None))");
+    debug_snapshot!(autobatch_from(false,None,  [doc_del_fil(), doc_del_fil(), doc_del_fil()]), @"Some((DocumentDeletion { deletion_ids: [0, 1, 2], includes_by_filter: true }, false, None))");
 
     // we can autobatch one or multiple Settings together
-    debug_snapshot!(autobatch_from(true, None, [settings(true)]), @"Some((Settings { allow_index_creation: true, settings_ids: [0] }, true))");
-    debug_snapshot!(autobatch_from(true, None, [settings(true), settings(true), settings(true)]), @"Some((Settings { allow_index_creation: true, settings_ids: [0, 1, 2] }, true))");
-    debug_snapshot!(autobatch_from(true, None, [settings(false)]), @"Some((Settings { allow_index_creation: false, settings_ids: [0] }, false))");
-    debug_snapshot!(autobatch_from(true, None, [settings(false), settings(false), settings(false)]), @"Some((Settings { allow_index_creation: false, settings_ids: [0, 1, 2] }, false))");
+    debug_snapshot!(autobatch_from(true, None, [settings(true)]), @"Some((Settings { allow_index_creation: true, settings_ids: [0] }, true, None))");
+    debug_snapshot!(autobatch_from(true, None, [settings(true), settings(true), settings(true)]), @"Some((Settings { allow_index_creation: true, settings_ids: [0, 1, 2] }, true, None))");
+    debug_snapshot!(autobatch_from(true, None, [settings(false)]), @"Some((Settings { allow_index_creation: false, settings_ids: [0] }, false, None))");
+    debug_snapshot!(autobatch_from(true, None, [settings(false), settings(false), settings(false)]), @"Some((Settings { allow_index_creation: false, settings_ids: [0, 1, 2] }, false, None))");
 
-    debug_snapshot!(autobatch_from(false,None,  [settings(true)]), @"Some((Settings { allow_index_creation: true, settings_ids: [0] }, true))");
-    debug_snapshot!(autobatch_from(false,None,  [settings(true), settings(true), settings(true)]), @"Some((Settings { allow_index_creation: true, settings_ids: [0, 1, 2] }, true))");
-    debug_snapshot!(autobatch_from(false,None,  [settings(false)]), @"Some((Settings { allow_index_creation: false, settings_ids: [0] }, false))");
-    debug_snapshot!(autobatch_from(false,None,  [settings(false), settings(false), settings(false)]), @"Some((Settings { allow_index_creation: false, settings_ids: [0, 1, 2] }, false))");
+    debug_snapshot!(autobatch_from(false,None,  [settings(true)]), @"Some((Settings { allow_index_creation: true, settings_ids: [0] }, true, None))");
+    debug_snapshot!(autobatch_from(false,None,  [settings(true), settings(true), settings(true)]), @"Some((Settings { allow_index_creation: true, settings_ids: [0, 1, 2] }, true, None))");
+    debug_snapshot!(autobatch_from(false,None,  [settings(false)]), @"Some((Settings { allow_index_creation: false, settings_ids: [0] }, false, None))");
+    debug_snapshot!(autobatch_from(false,None,  [settings(false), settings(false), settings(false)]), @"Some((Settings { allow_index_creation: false, settings_ids: [0, 1, 2] }, false, None))");
 
     // We can autobatch document addition with document deletion
-    debug_snapshot!(autobatch_from(true, None, [doc_imp(ReplaceDocuments, true, None), doc_del()]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0, 1] }, true))");
-    debug_snapshot!(autobatch_from(true, None, [doc_imp(UpdateDocuments, true, None), doc_del()]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0, 1] }, true))");
-    debug_snapshot!(autobatch_from(true, None, [doc_imp(ReplaceDocuments, false, None), doc_del()]), @"Some((DocumentOperation { allow_index_creation: false, primary_key: None, operation_ids: [0, 1] }, false))");
-    debug_snapshot!(autobatch_from(true, None, [doc_imp(UpdateDocuments, false, None), doc_del()]), @"Some((DocumentOperation { allow_index_creation: false, primary_key: None, operation_ids: [0, 1] }, false))");
-    debug_snapshot!(autobatch_from(true, None, [doc_imp(ReplaceDocuments, true, Some("catto")), doc_del()]), @r###"Some((DocumentOperation { allow_index_creation: true, primary_key: Some("catto"), operation_ids: [0, 1] }, true))"###);
-    debug_snapshot!(autobatch_from(true, None, [doc_imp(UpdateDocuments, true, Some("catto")), doc_del()]), @r###"Some((DocumentOperation { allow_index_creation: true, primary_key: Some("catto"), operation_ids: [0, 1] }, true))"###);
-    debug_snapshot!(autobatch_from(true, None, [doc_imp(ReplaceDocuments, false, Some("catto")), doc_del()]), @r###"Some((DocumentOperation { allow_index_creation: false, primary_key: Some("catto"), operation_ids: [0, 1] }, false))"###);
-    debug_snapshot!(autobatch_from(true, None, [doc_imp(UpdateDocuments, false, Some("catto")), doc_del()]), @r###"Some((DocumentOperation { allow_index_creation: false, primary_key: Some("catto"), operation_ids: [0, 1] }, false))"###);
-    debug_snapshot!(autobatch_from(false, None, [doc_imp(ReplaceDocuments, true, None), doc_del()]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0, 1] }, true))");
-    debug_snapshot!(autobatch_from(false, None, [doc_imp(UpdateDocuments, true, None), doc_del()]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0, 1] }, true))");
-    debug_snapshot!(autobatch_from(false, None, [doc_imp(ReplaceDocuments, false, None), doc_del()]), @"Some((DocumentOperation { allow_index_creation: false, primary_key: None, operation_ids: [0, 1] }, false))");
-    debug_snapshot!(autobatch_from(false, None, [doc_imp(UpdateDocuments, false, None), doc_del()]), @"Some((DocumentOperation { allow_index_creation: false, primary_key: None, operation_ids: [0, 1] }, false))");
-    debug_snapshot!(autobatch_from(false, None, [doc_imp(ReplaceDocuments, true, Some("catto")), doc_del()]), @r###"Some((DocumentOperation { allow_index_creation: true, primary_key: Some("catto"), operation_ids: [0, 1] }, true))"###);
-    debug_snapshot!(autobatch_from(false, None, [doc_imp(UpdateDocuments, true, Some("catto")), doc_del()]), @r###"Some((DocumentOperation { allow_index_creation: true, primary_key: Some("catto"), operation_ids: [0, 1] }, true))"###);
-    debug_snapshot!(autobatch_from(false, None, [doc_imp(ReplaceDocuments, false, Some("catto")), doc_del()]), @r###"Some((DocumentOperation { allow_index_creation: false, primary_key: Some("catto"), operation_ids: [0, 1] }, false))"###);
-    debug_snapshot!(autobatch_from(false, None, [doc_imp(UpdateDocuments, false, Some("catto")), doc_del()]), @r###"Some((DocumentOperation { allow_index_creation: false, primary_key: Some("catto"), operation_ids: [0, 1] }, false))"###);
+    debug_snapshot!(autobatch_from(true, None, [doc_imp(ReplaceDocuments, true, None), doc_del()]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0, 1] }, true, None))");
+    debug_snapshot!(autobatch_from(true, None, [doc_imp(UpdateDocuments, true, None), doc_del()]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0, 1] }, true, None))");
+    debug_snapshot!(autobatch_from(true, None, [doc_imp(ReplaceDocuments, false, None), doc_del()]), @"Some((DocumentOperation { allow_index_creation: false, primary_key: None, operation_ids: [0, 1] }, false, None))");
+    debug_snapshot!(autobatch_from(true, None, [doc_imp(UpdateDocuments, false, None), doc_del()]), @"Some((DocumentOperation { allow_index_creation: false, primary_key: None, operation_ids: [0, 1] }, false, None))");
+    debug_snapshot!(autobatch_from(true, None, [doc_imp(ReplaceDocuments, true, Some("catto")), doc_del()]), @r###"Some((DocumentOperation { allow_index_creation: true, primary_key: Some("catto"), operation_ids: [0, 1] }, true, None))"###);
+    debug_snapshot!(autobatch_from(true, None, [doc_imp(UpdateDocuments, true, Some("catto")), doc_del()]), @r###"Some((DocumentOperation { allow_index_creation: true, primary_key: Some("catto"), operation_ids: [0, 1] }, true, None))"###);
+    debug_snapshot!(autobatch_from(true, None, [doc_imp(ReplaceDocuments, false, Some("catto")), doc_del()]), @r###"Some((DocumentOperation { allow_index_creation: false, primary_key: Some("catto"), operation_ids: [0, 1] }, false, None))"###);
+    debug_snapshot!(autobatch_from(true, None, [doc_imp(UpdateDocuments, false, Some("catto")), doc_del()]), @r###"Some((DocumentOperation { allow_index_creation: false, primary_key: Some("catto"), operation_ids: [0, 1] }, false, None))"###);
+    debug_snapshot!(autobatch_from(false, None, [doc_imp(ReplaceDocuments, true, None), doc_del()]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0, 1] }, true, None))");
+    debug_snapshot!(autobatch_from(false, None, [doc_imp(UpdateDocuments, true, None), doc_del()]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0, 1] }, true, None))");
+    debug_snapshot!(autobatch_from(false, None, [doc_imp(ReplaceDocuments, false, None), doc_del()]), @"Some((DocumentOperation { allow_index_creation: false, primary_key: None, operation_ids: [0, 1] }, false, None))");
+    debug_snapshot!(autobatch_from(false, None, [doc_imp(UpdateDocuments, false, None), doc_del()]), @"Some((DocumentOperation { allow_index_creation: false, primary_key: None, operation_ids: [0, 1] }, false, None))");
+    debug_snapshot!(autobatch_from(false, None, [doc_imp(ReplaceDocuments, true, Some("catto")), doc_del()]), @r###"Some((DocumentOperation { allow_index_creation: true, primary_key: Some("catto"), operation_ids: [0, 1] }, true, None))"###);
+    debug_snapshot!(autobatch_from(false, None, [doc_imp(UpdateDocuments, true, Some("catto")), doc_del()]), @r###"Some((DocumentOperation { allow_index_creation: true, primary_key: Some("catto"), operation_ids: [0, 1] }, true, None))"###);
+    debug_snapshot!(autobatch_from(false, None, [doc_imp(ReplaceDocuments, false, Some("catto")), doc_del()]), @r###"Some((DocumentOperation { allow_index_creation: false, primary_key: Some("catto"), operation_ids: [0, 1] }, false, None))"###);
+    debug_snapshot!(autobatch_from(false, None, [doc_imp(UpdateDocuments, false, Some("catto")), doc_del()]), @r###"Some((DocumentOperation { allow_index_creation: false, primary_key: Some("catto"), operation_ids: [0, 1] }, false, None))"###);
     // And the other way around
-    debug_snapshot!(autobatch_from(true, None, [doc_del(), doc_imp(ReplaceDocuments, true, None)]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0, 1] }, false))");
-    debug_snapshot!(autobatch_from(true, None, [doc_del(), doc_imp(UpdateDocuments, true, None)]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0, 1] }, false))");
-    debug_snapshot!(autobatch_from(true, None, [doc_del(), doc_imp(ReplaceDocuments, false, None)]), @"Some((DocumentOperation { allow_index_creation: false, primary_key: None, operation_ids: [0, 1] }, false))");
-    debug_snapshot!(autobatch_from(true, None, [doc_del(), doc_imp(UpdateDocuments, false, None)]), @"Some((DocumentOperation { allow_index_creation: false, primary_key: None, operation_ids: [0, 1] }, false))");
-    debug_snapshot!(autobatch_from(true, None, [doc_del(), doc_imp(ReplaceDocuments, true, Some("catto"))]), @r###"Some((DocumentOperation { allow_index_creation: true, primary_key: Some("catto"), operation_ids: [0, 1] }, false))"###);
-    debug_snapshot!(autobatch_from(true, None, [doc_del(), doc_imp(UpdateDocuments, true, Some("catto"))]), @r###"Some((DocumentOperation { allow_index_creation: true, primary_key: Some("catto"), operation_ids: [0, 1] }, false))"###);
-    debug_snapshot!(autobatch_from(true, None, [doc_del(), doc_imp(ReplaceDocuments, false, Some("catto"))]), @r###"Some((DocumentOperation { allow_index_creation: false, primary_key: Some("catto"), operation_ids: [0, 1] }, false))"###);
-    debug_snapshot!(autobatch_from(true, None, [doc_del(), doc_imp(UpdateDocuments, false, Some("catto"))]), @r###"Some((DocumentOperation { allow_index_creation: false, primary_key: Some("catto"), operation_ids: [0, 1] }, false))"###);
-    debug_snapshot!(autobatch_from(false, None, [doc_del(), doc_imp(ReplaceDocuments, false, None)]), @"Some((DocumentOperation { allow_index_creation: false, primary_key: None, operation_ids: [0, 1] }, false))");
-    debug_snapshot!(autobatch_from(false, None, [doc_del(), doc_imp(UpdateDocuments, false, None)]), @"Some((DocumentOperation { allow_index_creation: false, primary_key: None, operation_ids: [0, 1] }, false))");
-    debug_snapshot!(autobatch_from(false, None, [doc_del(), doc_imp(ReplaceDocuments, false, Some("catto"))]), @r###"Some((DocumentOperation { allow_index_creation: false, primary_key: Some("catto"), operation_ids: [0, 1] }, false))"###);
-    debug_snapshot!(autobatch_from(false, None, [doc_del(), doc_imp(UpdateDocuments, false, Some("catto"))]), @r###"Some((DocumentOperation { allow_index_creation: false, primary_key: Some("catto"), operation_ids: [0, 1] }, false))"###);
+    debug_snapshot!(autobatch_from(true, None, [doc_del(), doc_imp(ReplaceDocuments, true, None)]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0, 1] }, false, None))");
+    debug_snapshot!(autobatch_from(true, None, [doc_del(), doc_imp(UpdateDocuments, true, None)]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0, 1] }, false, None))");
+    debug_snapshot!(autobatch_from(true, None, [doc_del(), doc_imp(ReplaceDocuments, false, None)]), @"Some((DocumentOperation { allow_index_creation: false, primary_key: None, operation_ids: [0, 1] }, false, None))");
+    debug_snapshot!(autobatch_from(true, None, [doc_del(), doc_imp(UpdateDocuments, false, None)]), @"Some((DocumentOperation { allow_index_creation: false, primary_key: None, operation_ids: [0, 1] }, false, None))");
+    debug_snapshot!(autobatch_from(true, None, [doc_del(), doc_imp(ReplaceDocuments, true, Some("catto"))]), @r###"Some((DocumentOperation { allow_index_creation: true, primary_key: Some("catto"), operation_ids: [0, 1] }, false, None))"###);
+    debug_snapshot!(autobatch_from(true, None, [doc_del(), doc_imp(UpdateDocuments, true, Some("catto"))]), @r###"Some((DocumentOperation { allow_index_creation: true, primary_key: Some("catto"), operation_ids: [0, 1] }, false, None))"###);
+    debug_snapshot!(autobatch_from(true, None, [doc_del(), doc_imp(ReplaceDocuments, false, Some("catto"))]), @r###"Some((DocumentOperation { allow_index_creation: false, primary_key: Some("catto"), operation_ids: [0, 1] }, false, None))"###);
+    debug_snapshot!(autobatch_from(true, None, [doc_del(), doc_imp(UpdateDocuments, false, Some("catto"))]), @r###"Some((DocumentOperation { allow_index_creation: false, primary_key: Some("catto"), operation_ids: [0, 1] }, false, None))"###);
+    debug_snapshot!(autobatch_from(false, None, [doc_del(), doc_imp(ReplaceDocuments, false, None)]), @"Some((DocumentOperation { allow_index_creation: false, primary_key: None, operation_ids: [0, 1] }, false, None))");
+    debug_snapshot!(autobatch_from(false, None, [doc_del(), doc_imp(UpdateDocuments, false, None)]), @"Some((DocumentOperation { allow_index_creation: false, primary_key: None, operation_ids: [0, 1] }, false, None))");
+    debug_snapshot!(autobatch_from(false, None, [doc_del(), doc_imp(ReplaceDocuments, false, Some("catto"))]), @r###"Some((DocumentOperation { allow_index_creation: false, primary_key: Some("catto"), operation_ids: [0, 1] }, false, None))"###);
+    debug_snapshot!(autobatch_from(false, None, [doc_del(), doc_imp(UpdateDocuments, false, Some("catto"))]), @r###"Some((DocumentOperation { allow_index_creation: false, primary_key: Some("catto"), operation_ids: [0, 1] }, false, None))"###);
 
     // But we can't autobatch document addition with document deletion by filter
-    debug_snapshot!(autobatch_from(true, None, [doc_imp(ReplaceDocuments, true, None), doc_del_fil()]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0] }, true))");
-    debug_snapshot!(autobatch_from(true, None, [doc_imp(UpdateDocuments, true, None), doc_del_fil()]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0] }, true))");
-    debug_snapshot!(autobatch_from(true, None, [doc_imp(ReplaceDocuments, false, None), doc_del_fil()]), @"Some((DocumentOperation { allow_index_creation: false, primary_key: None, operation_ids: [0] }, false))");
-    debug_snapshot!(autobatch_from(true, None, [doc_imp(UpdateDocuments, false, None), doc_del_fil()]), @"Some((DocumentOperation { allow_index_creation: false, primary_key: None, operation_ids: [0] }, false))");
-    debug_snapshot!(autobatch_from(true, None, [doc_imp(ReplaceDocuments, true, Some("catto")), doc_del_fil()]), @r###"Some((DocumentOperation { allow_index_creation: true, primary_key: Some("catto"), operation_ids: [0] }, true))"###);
-    debug_snapshot!(autobatch_from(true, None, [doc_imp(UpdateDocuments, true, Some("catto")), doc_del_fil()]), @r###"Some((DocumentOperation { allow_index_creation: true, primary_key: Some("catto"), operation_ids: [0] }, true))"###);
-    debug_snapshot!(autobatch_from(true, None, [doc_imp(ReplaceDocuments, false, Some("catto")), doc_del_fil()]), @r###"Some((DocumentOperation { allow_index_creation: false, primary_key: Some("catto"), operation_ids: [0] }, false))"###);
-    debug_snapshot!(autobatch_from(true, None, [doc_imp(UpdateDocuments, false, Some("catto")), doc_del_fil()]), @r###"Some((DocumentOperation { allow_index_creation: false, primary_key: Some("catto"), operation_ids: [0] }, false))"###);
-    debug_snapshot!(autobatch_from(false, None, [doc_imp(ReplaceDocuments, true, None), doc_del_fil()]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0] }, true))");
-    debug_snapshot!(autobatch_from(false, None, [doc_imp(UpdateDocuments, true, None), doc_del_fil()]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0] }, true))");
-    debug_snapshot!(autobatch_from(false, None, [doc_imp(ReplaceDocuments, false, None), doc_del_fil()]), @"Some((DocumentOperation { allow_index_creation: false, primary_key: None, operation_ids: [0] }, false))");
-    debug_snapshot!(autobatch_from(false, None, [doc_imp(UpdateDocuments, false, None), doc_del_fil()]), @"Some((DocumentOperation { allow_index_creation: false, primary_key: None, operation_ids: [0] }, false))");
-    debug_snapshot!(autobatch_from(false, None, [doc_imp(ReplaceDocuments, true, Some("catto")), doc_del_fil()]), @r###"Some((DocumentOperation { allow_index_creation: true, primary_key: Some("catto"), operation_ids: [0] }, true))"###);
-    debug_snapshot!(autobatch_from(false, None, [doc_imp(UpdateDocuments, true, Some("catto")), doc_del_fil()]), @r###"Some((DocumentOperation { allow_index_creation: true, primary_key: Some("catto"), operation_ids: [0] }, true))"###);
-    debug_snapshot!(autobatch_from(false, None, [doc_imp(ReplaceDocuments, false, Some("catto")), doc_del_fil()]), @r###"Some((DocumentOperation { allow_index_creation: false, primary_key: Some("catto"), operation_ids: [0] }, false))"###);
-    debug_snapshot!(autobatch_from(false, None, [doc_imp(UpdateDocuments, false, Some("catto")), doc_del_fil()]), @r###"Some((DocumentOperation { allow_index_creation: false, primary_key: Some("catto"), operation_ids: [0] }, false))"###);
+    debug_snapshot!(autobatch_from(true, None, [doc_imp(ReplaceDocuments, true, None), doc_del_fil()]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0] }, true, Some(DocumentOperationWithDeletionByFilter { id: 1 })))");
+    debug_snapshot!(autobatch_from(true, None, [doc_imp(UpdateDocuments, true, None), doc_del_fil()]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0] }, true, Some(DocumentOperationWithDeletionByFilter { id: 1 })))");
+    debug_snapshot!(autobatch_from(true, None, [doc_imp(ReplaceDocuments, false, None), doc_del_fil()]), @"Some((DocumentOperation { allow_index_creation: false, primary_key: None, operation_ids: [0] }, false, Some(DocumentOperationWithDeletionByFilter { id: 1 })))");
+    debug_snapshot!(autobatch_from(true, None, [doc_imp(UpdateDocuments, false, None), doc_del_fil()]), @"Some((DocumentOperation { allow_index_creation: false, primary_key: None, operation_ids: [0] }, false, Some(DocumentOperationWithDeletionByFilter { id: 1 })))");
+    debug_snapshot!(autobatch_from(true, None, [doc_imp(ReplaceDocuments, true, Some("catto")), doc_del_fil()]), @r###"Some((DocumentOperation { allow_index_creation: true, primary_key: Some("catto"), operation_ids: [0] }, true, Some(DocumentOperationWithDeletionByFilter { id: 1 })))"###);
+    debug_snapshot!(autobatch_from(true, None, [doc_imp(UpdateDocuments, true, Some("catto")), doc_del_fil()]), @r###"Some((DocumentOperation { allow_index_creation: true, primary_key: Some("catto"), operation_ids: [0] }, true, Some(DocumentOperationWithDeletionByFilter { id: 1 })))"###);
+    debug_snapshot!(autobatch_from(true, None, [doc_imp(ReplaceDocuments, false, Some("catto")), doc_del_fil()]), @r###"Some((DocumentOperation { allow_index_creation: false, primary_key: Some("catto"), operation_ids: [0] }, false, Some(DocumentOperationWithDeletionByFilter { id: 1 })))"###);
+    debug_snapshot!(autobatch_from(true, None, [doc_imp(UpdateDocuments, false, Some("catto")), doc_del_fil()]), @r###"Some((DocumentOperation { allow_index_creation: false, primary_key: Some("catto"), operation_ids: [0] }, false, Some(DocumentOperationWithDeletionByFilter { id: 1 })))"###);
+    debug_snapshot!(autobatch_from(false, None, [doc_imp(ReplaceDocuments, true, None), doc_del_fil()]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0] }, true, Some(DocumentOperationWithDeletionByFilter { id: 1 })))");
+    debug_snapshot!(autobatch_from(false, None, [doc_imp(UpdateDocuments, true, None), doc_del_fil()]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0] }, true, Some(DocumentOperationWithDeletionByFilter { id: 1 })))");
+    debug_snapshot!(autobatch_from(false, None, [doc_imp(ReplaceDocuments, false, None), doc_del_fil()]), @"Some((DocumentOperation { allow_index_creation: false, primary_key: None, operation_ids: [0] }, false, Some(DocumentOperationWithDeletionByFilter { id: 1 })))");
+    debug_snapshot!(autobatch_from(false, None, [doc_imp(UpdateDocuments, false, None), doc_del_fil()]), @"Some((DocumentOperation { allow_index_creation: false, primary_key: None, operation_ids: [0] }, false, Some(DocumentOperationWithDeletionByFilter { id: 1 })))");
+    debug_snapshot!(autobatch_from(false, None, [doc_imp(ReplaceDocuments, true, Some("catto")), doc_del_fil()]), @r###"Some((DocumentOperation { allow_index_creation: true, primary_key: Some("catto"), operation_ids: [0] }, true, Some(DocumentOperationWithDeletionByFilter { id: 1 })))"###);
+    debug_snapshot!(autobatch_from(false, None, [doc_imp(UpdateDocuments, true, Some("catto")), doc_del_fil()]), @r###"Some((DocumentOperation { allow_index_creation: true, primary_key: Some("catto"), operation_ids: [0] }, true, Some(DocumentOperationWithDeletionByFilter { id: 1 })))"###);
+    debug_snapshot!(autobatch_from(false, None, [doc_imp(ReplaceDocuments, false, Some("catto")), doc_del_fil()]), @r###"Some((DocumentOperation { allow_index_creation: false, primary_key: Some("catto"), operation_ids: [0] }, false, Some(DocumentOperationWithDeletionByFilter { id: 1 })))"###);
+    debug_snapshot!(autobatch_from(false, None, [doc_imp(UpdateDocuments, false, Some("catto")), doc_del_fil()]), @r###"Some((DocumentOperation { allow_index_creation: false, primary_key: Some("catto"), operation_ids: [0] }, false, Some(DocumentOperationWithDeletionByFilter { id: 1 })))"###);
     // And the other way around
-    debug_snapshot!(autobatch_from(true, None, [doc_del_fil(), doc_imp(ReplaceDocuments, true, None)]), @"Some((DocumentDeletion { deletion_ids: [0], includes_by_filter: true }, false))");
-    debug_snapshot!(autobatch_from(true, None, [doc_del_fil(), doc_imp(UpdateDocuments, true, None)]), @"Some((DocumentDeletion { deletion_ids: [0], includes_by_filter: true }, false))");
-    debug_snapshot!(autobatch_from(true, None, [doc_del_fil(), doc_imp(ReplaceDocuments, false, None)]), @"Some((DocumentDeletion { deletion_ids: [0], includes_by_filter: true }, false))");
-    debug_snapshot!(autobatch_from(true, None, [doc_del_fil(), doc_imp(UpdateDocuments, false, None)]), @"Some((DocumentDeletion { deletion_ids: [0], includes_by_filter: true }, false))");
-    debug_snapshot!(autobatch_from(true, None, [doc_del_fil(), doc_imp(ReplaceDocuments, true, Some("catto"))]), @"Some((DocumentDeletion { deletion_ids: [0], includes_by_filter: true }, false))");
-    debug_snapshot!(autobatch_from(true, None, [doc_del_fil(), doc_imp(UpdateDocuments, true, Some("catto"))]), @"Some((DocumentDeletion { deletion_ids: [0], includes_by_filter: true }, false))");
-    debug_snapshot!(autobatch_from(true, None, [doc_del_fil(), doc_imp(ReplaceDocuments, false, Some("catto"))]), @"Some((DocumentDeletion { deletion_ids: [0], includes_by_filter: true }, false))");
-    debug_snapshot!(autobatch_from(true, None, [doc_del_fil(), doc_imp(UpdateDocuments, false, Some("catto"))]), @"Some((DocumentDeletion { deletion_ids: [0], includes_by_filter: true }, false))");
-    debug_snapshot!(autobatch_from(false, None, [doc_del_fil(), doc_imp(ReplaceDocuments, false, None)]), @"Some((DocumentDeletion { deletion_ids: [0], includes_by_filter: true }, false))");
-    debug_snapshot!(autobatch_from(false, None, [doc_del_fil(), doc_imp(UpdateDocuments, false, None)]), @"Some((DocumentDeletion { deletion_ids: [0], includes_by_filter: true }, false))");
-    debug_snapshot!(autobatch_from(false, None, [doc_del_fil(), doc_imp(ReplaceDocuments, false, Some("catto"))]), @"Some((DocumentDeletion { deletion_ids: [0], includes_by_filter: true }, false))");
-    debug_snapshot!(autobatch_from(false, None, [doc_del_fil(), doc_imp(UpdateDocuments, false, Some("catto"))]), @"Some((DocumentDeletion { deletion_ids: [0], includes_by_filter: true }, false))");
+    debug_snapshot!(autobatch_from(true, None, [doc_del_fil(), doc_imp(ReplaceDocuments, true, None)]), @"Some((DocumentDeletion { deletion_ids: [0], includes_by_filter: true }, false, Some(DeletionByFilterWithDocumentOperation { id: 1 })))");
+    debug_snapshot!(autobatch_from(true, None, [doc_del_fil(), doc_imp(UpdateDocuments, true, None)]), @"Some((DocumentDeletion { deletion_ids: [0], includes_by_filter: true }, false, Some(DeletionByFilterWithDocumentOperation { id: 1 })))");
+    debug_snapshot!(autobatch_from(true, None, [doc_del_fil(), doc_imp(ReplaceDocuments, false, None)]), @"Some((DocumentDeletion { deletion_ids: [0], includes_by_filter: true }, false, Some(DeletionByFilterWithDocumentOperation { id: 1 })))");
+    debug_snapshot!(autobatch_from(true, None, [doc_del_fil(), doc_imp(UpdateDocuments, false, None)]), @"Some((DocumentDeletion { deletion_ids: [0], includes_by_filter: true }, false, Some(DeletionByFilterWithDocumentOperation { id: 1 })))");
+    debug_snapshot!(autobatch_from(true, None, [doc_del_fil(), doc_imp(ReplaceDocuments, true, Some("catto"))]), @"Some((DocumentDeletion { deletion_ids: [0], includes_by_filter: true }, false, Some(DeletionByFilterWithDocumentOperation { id: 1 })))");
+    debug_snapshot!(autobatch_from(true, None, [doc_del_fil(), doc_imp(UpdateDocuments, true, Some("catto"))]), @"Some((DocumentDeletion { deletion_ids: [0], includes_by_filter: true }, false, Some(DeletionByFilterWithDocumentOperation { id: 1 })))");
+    debug_snapshot!(autobatch_from(true, None, [doc_del_fil(), doc_imp(ReplaceDocuments, false, Some("catto"))]), @"Some((DocumentDeletion { deletion_ids: [0], includes_by_filter: true }, false, Some(DeletionByFilterWithDocumentOperation { id: 1 })))");
+    debug_snapshot!(autobatch_from(true, None, [doc_del_fil(), doc_imp(UpdateDocuments, false, Some("catto"))]), @"Some((DocumentDeletion { deletion_ids: [0], includes_by_filter: true }, false, Some(DeletionByFilterWithDocumentOperation { id: 1 })))");
+    debug_snapshot!(autobatch_from(false, None, [doc_del_fil(), doc_imp(ReplaceDocuments, false, None)]), @"Some((DocumentDeletion { deletion_ids: [0], includes_by_filter: true }, false, Some(DeletionByFilterWithDocumentOperation { id: 1 })))");
+    debug_snapshot!(autobatch_from(false, None, [doc_del_fil(), doc_imp(UpdateDocuments, false, None)]), @"Some((DocumentDeletion { deletion_ids: [0], includes_by_filter: true }, false, Some(DeletionByFilterWithDocumentOperation { id: 1 })))");
+    debug_snapshot!(autobatch_from(false, None, [doc_del_fil(), doc_imp(ReplaceDocuments, false, Some("catto"))]), @"Some((DocumentDeletion { deletion_ids: [0], includes_by_filter: true }, false, Some(DeletionByFilterWithDocumentOperation { id: 1 })))");
+    debug_snapshot!(autobatch_from(false, None, [doc_del_fil(), doc_imp(UpdateDocuments, false, Some("catto"))]), @"Some((DocumentDeletion { deletion_ids: [0], includes_by_filter: true }, false, Some(DeletionByFilterWithDocumentOperation { id: 1 })))");
 }
 
 #[test]
 fn simple_different_document_operations_autobatch_together() {
     // addition and updates with deletion by filter can't batch together
-    debug_snapshot!(autobatch_from(true, None, [doc_imp(ReplaceDocuments, true, None), doc_imp(UpdateDocuments, true, None)]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0, 1] }, true))");
-    debug_snapshot!(autobatch_from(true, None, [doc_imp(UpdateDocuments, true, None), doc_imp(ReplaceDocuments, true, None)]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0, 1] }, true))");
-    debug_snapshot!(autobatch_from(true, None, [doc_imp(UpdateDocuments, true, None), doc_del_fil()]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0] }, true))");
-    debug_snapshot!(autobatch_from(true, None, [doc_imp(ReplaceDocuments, true, None), doc_del_fil()]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0] }, true))");
-    debug_snapshot!(autobatch_from(true, None, [doc_del_fil(), doc_imp(UpdateDocuments, true, None)]), @"Some((DocumentDeletion { deletion_ids: [0], includes_by_filter: true }, false))");
-    debug_snapshot!(autobatch_from(true, None, [doc_del_fil(), doc_imp(ReplaceDocuments, true, None)]), @"Some((DocumentDeletion { deletion_ids: [0], includes_by_filter: true }, false))");
+    debug_snapshot!(autobatch_from(true, None, [doc_imp(ReplaceDocuments, true, None), doc_imp(UpdateDocuments, true, None)]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0, 1] }, true, None))");
+    debug_snapshot!(autobatch_from(true, None, [doc_imp(UpdateDocuments, true, None), doc_imp(ReplaceDocuments, true, None)]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0, 1] }, true, None))");
+    debug_snapshot!(autobatch_from(true, None, [doc_imp(UpdateDocuments, true, None), doc_del_fil()]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0] }, true, Some(DocumentOperationWithDeletionByFilter { id: 1 })))");
+    debug_snapshot!(autobatch_from(true, None, [doc_imp(ReplaceDocuments, true, None), doc_del_fil()]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0] }, true, Some(DocumentOperationWithDeletionByFilter { id: 1 })))");
+    debug_snapshot!(autobatch_from(true, None, [doc_del_fil(), doc_imp(UpdateDocuments, true, None)]), @"Some((DocumentDeletion { deletion_ids: [0], includes_by_filter: true }, false, Some(DeletionByFilterWithDocumentOperation { id: 1 })))");
+    debug_snapshot!(autobatch_from(true, None, [doc_del_fil(), doc_imp(ReplaceDocuments, true, None)]), @"Some((DocumentDeletion { deletion_ids: [0], includes_by_filter: true }, false, Some(DeletionByFilterWithDocumentOperation { id: 1 })))");
 
-    debug_snapshot!(autobatch_from(true, None, [doc_imp(ReplaceDocuments, true, None), idx_create()]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0] }, true))");
-    debug_snapshot!(autobatch_from(true, None, [doc_imp(UpdateDocuments, true, None), idx_create()]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0] }, true))");
-    debug_snapshot!(autobatch_from(true, None, [doc_del(), idx_create()]), @"Some((DocumentDeletion { deletion_ids: [0], includes_by_filter: false }, false))");
-    debug_snapshot!(autobatch_from(true, None, [doc_del_fil(), idx_create()]), @"Some((DocumentDeletion { deletion_ids: [0], includes_by_filter: true }, false))");
+    debug_snapshot!(autobatch_from(true, None, [doc_imp(ReplaceDocuments, true, None), idx_create()]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0] }, true, Some(TaskCannotBeBatched { kind: IndexCreation, id: 1 })))");
+    debug_snapshot!(autobatch_from(true, None, [doc_imp(UpdateDocuments, true, None), idx_create()]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0] }, true, Some(TaskCannotBeBatched { kind: IndexCreation, id: 1 })))");
+    debug_snapshot!(autobatch_from(true, None, [doc_del(), idx_create()]), @"Some((DocumentDeletion { deletion_ids: [0], includes_by_filter: false }, false, Some(TaskCannotBeBatched { kind: IndexCreation, id: 1 })))");
+    debug_snapshot!(autobatch_from(true, None, [doc_del_fil(), idx_create()]), @"Some((DocumentDeletion { deletion_ids: [0], includes_by_filter: true }, false, Some(TaskCannotBeBatched { kind: IndexCreation, id: 1 })))");
 
-    debug_snapshot!(autobatch_from(true, None, [doc_imp(ReplaceDocuments, true, None), idx_update()]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0] }, true))");
-    debug_snapshot!(autobatch_from(true, None, [doc_imp(UpdateDocuments, true, None), idx_update()]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0] }, true))");
-    debug_snapshot!(autobatch_from(true, None, [doc_del(), idx_update()]), @"Some((DocumentDeletion { deletion_ids: [0], includes_by_filter: false }, false))");
-    debug_snapshot!(autobatch_from(true, None, [doc_del_fil(), idx_update()]), @"Some((DocumentDeletion { deletion_ids: [0], includes_by_filter: true }, false))");
+    debug_snapshot!(autobatch_from(true, None, [doc_imp(ReplaceDocuments, true, None), idx_update()]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0] }, true, Some(TaskCannotBeBatched { kind: IndexUpdate, id: 1 })))");
+    debug_snapshot!(autobatch_from(true, None, [doc_imp(UpdateDocuments, true, None), idx_update()]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0] }, true, Some(TaskCannotBeBatched { kind: IndexUpdate, id: 1 })))");
+    debug_snapshot!(autobatch_from(true, None, [doc_del(), idx_update()]), @"Some((DocumentDeletion { deletion_ids: [0], includes_by_filter: false }, false, Some(TaskCannotBeBatched { kind: IndexUpdate, id: 1 })))");
+    debug_snapshot!(autobatch_from(true, None, [doc_del_fil(), idx_update()]), @"Some((DocumentDeletion { deletion_ids: [0], includes_by_filter: true }, false, Some(TaskCannotBeBatched { kind: IndexUpdate, id: 1 })))");
 
-    debug_snapshot!(autobatch_from(true, None, [doc_imp(ReplaceDocuments, true, None), idx_swap()]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0] }, true))");
-    debug_snapshot!(autobatch_from(true, None, [doc_imp(UpdateDocuments, true, None), idx_swap()]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0] }, true))");
-    debug_snapshot!(autobatch_from(true, None, [doc_del(), idx_swap()]), @"Some((DocumentDeletion { deletion_ids: [0], includes_by_filter: false }, false))");
-    debug_snapshot!(autobatch_from(true, None, [doc_del_fil(), idx_swap()]), @"Some((DocumentDeletion { deletion_ids: [0], includes_by_filter: true }, false))");
+    debug_snapshot!(autobatch_from(true, None, [doc_imp(ReplaceDocuments, true, None), idx_swap()]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0] }, true, Some(TaskCannotBeBatched { kind: IndexSwap, id: 1 })))");
+    debug_snapshot!(autobatch_from(true, None, [doc_imp(UpdateDocuments, true, None), idx_swap()]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0] }, true, Some(TaskCannotBeBatched { kind: IndexSwap, id: 1 })))");
+    debug_snapshot!(autobatch_from(true, None, [doc_del(), idx_swap()]), @"Some((DocumentDeletion { deletion_ids: [0], includes_by_filter: false }, false, Some(TaskCannotBeBatched { kind: IndexSwap, id: 1 })))");
+    debug_snapshot!(autobatch_from(true, None, [doc_del_fil(), idx_swap()]), @"Some((DocumentDeletion { deletion_ids: [0], includes_by_filter: true }, false, Some(TaskCannotBeBatched { kind: IndexSwap, id: 1 })))");
 }
 
 #[test]
 fn document_addition_doesnt_batch_with_settings() {
     // simple case
-    debug_snapshot!(autobatch_from(true, None, [doc_imp(ReplaceDocuments, true, None), settings(true)]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0] }, true))");
-    debug_snapshot!(autobatch_from(true, None, [doc_imp(UpdateDocuments, true, None), settings(true)]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0] }, true))");
+    debug_snapshot!(autobatch_from(true, None, [doc_imp(ReplaceDocuments, true, None), settings(true)]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0] }, true, Some(DocumentOperationWithSettings { id: 1 })))");
+    debug_snapshot!(autobatch_from(true, None, [doc_imp(UpdateDocuments, true, None), settings(true)]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0] }, true, Some(DocumentOperationWithSettings { id: 1 })))");
 
     // multiple settings and doc addition
-    debug_snapshot!(autobatch_from(true, None, [doc_imp(ReplaceDocuments, true, None), doc_imp(ReplaceDocuments, true, None), settings(true), settings(true)]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0, 1] }, true))");
-    debug_snapshot!(autobatch_from(true, None, [doc_imp(ReplaceDocuments, true, None), doc_imp(ReplaceDocuments, true, None), settings(true), settings(true)]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0, 1] }, true))");
+    debug_snapshot!(autobatch_from(true, None, [doc_imp(ReplaceDocuments, true, None), doc_imp(ReplaceDocuments, true, None), settings(true), settings(true)]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0, 1] }, true, Some(DocumentOperationWithSettings { id: 2 })))");
+    debug_snapshot!(autobatch_from(true, None, [doc_imp(ReplaceDocuments, true, None), doc_imp(ReplaceDocuments, true, None), settings(true), settings(true)]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0, 1] }, true, Some(DocumentOperationWithSettings { id: 2 })))");
 
     // addition and setting unordered
-    debug_snapshot!(autobatch_from(true, None, [doc_imp(ReplaceDocuments, true, None), settings(true), doc_imp(ReplaceDocuments, true, None), settings(true)]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0] }, true))");
-    debug_snapshot!(autobatch_from(true, None, [doc_imp(UpdateDocuments, true, None), settings(true), doc_imp(UpdateDocuments, true, None), settings(true)]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0] }, true))");
+    debug_snapshot!(autobatch_from(true, None, [doc_imp(ReplaceDocuments, true, None), settings(true), doc_imp(ReplaceDocuments, true, None), settings(true)]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0] }, true, Some(DocumentOperationWithSettings { id: 1 })))");
+    debug_snapshot!(autobatch_from(true, None, [doc_imp(UpdateDocuments, true, None), settings(true), doc_imp(UpdateDocuments, true, None), settings(true)]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0] }, true, Some(DocumentOperationWithSettings { id: 1 })))");
 
     // Doesn't batch with other forbidden operations
-    debug_snapshot!(autobatch_from(true, None, [doc_imp(ReplaceDocuments, true, None), settings(true), doc_imp(UpdateDocuments, true, None)]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0] }, true))");
-    debug_snapshot!(autobatch_from(true, None, [doc_imp(UpdateDocuments, true, None), settings(true), doc_imp(ReplaceDocuments, true, None)]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0] }, true))");
-    debug_snapshot!(autobatch_from(true, None, [doc_imp(ReplaceDocuments, true, None), settings(true), doc_del()]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0] }, true))");
-    debug_snapshot!(autobatch_from(true, None, [doc_imp(UpdateDocuments, true, None), settings(true), doc_del()]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0] }, true))");
-    debug_snapshot!(autobatch_from(true, None, [doc_imp(ReplaceDocuments, true, None), settings(true), idx_create()]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0] }, true))");
-    debug_snapshot!(autobatch_from(true, None, [doc_imp(UpdateDocuments, true, None), settings(true), idx_create()]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0] }, true))");
-    debug_snapshot!(autobatch_from(true, None, [doc_imp(ReplaceDocuments, true, None), settings(true), idx_update()]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0] }, true))");
-    debug_snapshot!(autobatch_from(true, None, [doc_imp(UpdateDocuments, true, None), settings(true), idx_update()]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0] }, true))");
-    debug_snapshot!(autobatch_from(true, None, [doc_imp(ReplaceDocuments, true, None), settings(true), idx_swap()]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0] }, true))");
-    debug_snapshot!(autobatch_from(true, None, [doc_imp(UpdateDocuments, true, None), settings(true), idx_swap()]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0] }, true))");
+    debug_snapshot!(autobatch_from(true, None, [doc_imp(ReplaceDocuments, true, None), settings(true), doc_imp(UpdateDocuments, true, None)]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0] }, true, Some(DocumentOperationWithSettings { id: 1 })))");
+    debug_snapshot!(autobatch_from(true, None, [doc_imp(UpdateDocuments, true, None), settings(true), doc_imp(ReplaceDocuments, true, None)]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0] }, true, Some(DocumentOperationWithSettings { id: 1 })))");
+    debug_snapshot!(autobatch_from(true, None, [doc_imp(ReplaceDocuments, true, None), settings(true), doc_del()]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0] }, true, Some(DocumentOperationWithSettings { id: 1 })))");
+    debug_snapshot!(autobatch_from(true, None, [doc_imp(UpdateDocuments, true, None), settings(true), doc_del()]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0] }, true, Some(DocumentOperationWithSettings { id: 1 })))");
+    debug_snapshot!(autobatch_from(true, None, [doc_imp(ReplaceDocuments, true, None), settings(true), idx_create()]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0] }, true, Some(DocumentOperationWithSettings { id: 1 })))");
+    debug_snapshot!(autobatch_from(true, None, [doc_imp(UpdateDocuments, true, None), settings(true), idx_create()]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0] }, true, Some(DocumentOperationWithSettings { id: 1 })))");
+    debug_snapshot!(autobatch_from(true, None, [doc_imp(ReplaceDocuments, true, None), settings(true), idx_update()]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0] }, true, Some(DocumentOperationWithSettings { id: 1 })))");
+    debug_snapshot!(autobatch_from(true, None, [doc_imp(UpdateDocuments, true, None), settings(true), idx_update()]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0] }, true, Some(DocumentOperationWithSettings { id: 1 })))");
+    debug_snapshot!(autobatch_from(true, None, [doc_imp(ReplaceDocuments, true, None), settings(true), idx_swap()]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0] }, true, Some(DocumentOperationWithSettings { id: 1 })))");
+    debug_snapshot!(autobatch_from(true, None, [doc_imp(UpdateDocuments, true, None), settings(true), idx_swap()]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0] }, true, Some(DocumentOperationWithSettings { id: 1 })))");
 }
 
 #[test]
 fn clear_and_additions() {
     // these two doesn't need to batch
-    debug_snapshot!(autobatch_from(true, None, [doc_clr(), doc_imp(ReplaceDocuments, true, None)]), @"Some((DocumentClear { ids: [0] }, false))");
-    debug_snapshot!(autobatch_from(true, None, [doc_clr(), doc_imp(UpdateDocuments, true, None)]), @"Some((DocumentClear { ids: [0] }, false))");
+    debug_snapshot!(autobatch_from(true, None, [doc_clr(), doc_imp(ReplaceDocuments, true, None)]), @"Some((DocumentClear { ids: [0] }, false, Some(DocumentOperationWithSettings { id: 1 })))");
+    debug_snapshot!(autobatch_from(true, None, [doc_clr(), doc_imp(UpdateDocuments, true, None)]), @"Some((DocumentClear { ids: [0] }, false, Some(DocumentOperationWithSettings { id: 1 })))");
 
     // Basic use case
-    debug_snapshot!(autobatch_from(true, None, [doc_imp(ReplaceDocuments, true, None), doc_imp(ReplaceDocuments, true, None), doc_clr()]), @"Some((DocumentClear { ids: [0, 1, 2] }, true))");
-    debug_snapshot!(autobatch_from(true, None, [doc_imp(UpdateDocuments, true, None), doc_imp(UpdateDocuments, true, None), doc_clr()]), @"Some((DocumentClear { ids: [0, 1, 2] }, true))");
+    debug_snapshot!(autobatch_from(true, None, [doc_imp(ReplaceDocuments, true, None), doc_imp(ReplaceDocuments, true, None), doc_clr()]), @"Some((DocumentClear { ids: [0, 1, 2] }, true, None))");
+    debug_snapshot!(autobatch_from(true, None, [doc_imp(UpdateDocuments, true, None), doc_imp(UpdateDocuments, true, None), doc_clr()]), @"Some((DocumentClear { ids: [0, 1, 2] }, true, None))");
 
     // This batch kind doesn't mix with other document addition
-    debug_snapshot!(autobatch_from(true, None, [doc_imp(ReplaceDocuments, true, None), doc_imp(ReplaceDocuments, true, None), doc_clr(), doc_imp(ReplaceDocuments, true, None)]), @"Some((DocumentClear { ids: [0, 1, 2] }, true))");
-    debug_snapshot!(autobatch_from(true, None, [doc_imp(UpdateDocuments, true, None), doc_imp(UpdateDocuments, true, None), doc_clr(), doc_imp(UpdateDocuments, true, None)]), @"Some((DocumentClear { ids: [0, 1, 2] }, true))");
+    debug_snapshot!(autobatch_from(true, None, [doc_imp(ReplaceDocuments, true, None), doc_imp(ReplaceDocuments, true, None), doc_clr(), doc_imp(ReplaceDocuments, true, None)]), @"Some((DocumentClear { ids: [0, 1, 2] }, true, Some(DocumentOperationWithSettings { id: 3 })))");
+    debug_snapshot!(autobatch_from(true, None, [doc_imp(UpdateDocuments, true, None), doc_imp(UpdateDocuments, true, None), doc_clr(), doc_imp(UpdateDocuments, true, None)]), @"Some((DocumentClear { ids: [0, 1, 2] }, true, Some(DocumentOperationWithSettings { id: 3 })))");
 
     // But you can batch multiple clear together
-    debug_snapshot!(autobatch_from(true, None, [doc_imp(ReplaceDocuments, true, None), doc_imp(ReplaceDocuments, true, None), doc_clr(), doc_clr(), doc_clr()]), @"Some((DocumentClear { ids: [0, 1, 2, 3, 4] }, true))");
-    debug_snapshot!(autobatch_from(true, None, [doc_imp(UpdateDocuments, true, None), doc_imp(UpdateDocuments, true, None), doc_clr(), doc_clr(), doc_clr()]), @"Some((DocumentClear { ids: [0, 1, 2, 3, 4] }, true))");
+    debug_snapshot!(autobatch_from(true, None, [doc_imp(ReplaceDocuments, true, None), doc_imp(ReplaceDocuments, true, None), doc_clr(), doc_clr(), doc_clr()]), @"Some((DocumentClear { ids: [0, 1, 2, 3, 4] }, true, None))");
+    debug_snapshot!(autobatch_from(true, None, [doc_imp(UpdateDocuments, true, None), doc_imp(UpdateDocuments, true, None), doc_clr(), doc_clr(), doc_clr()]), @"Some((DocumentClear { ids: [0, 1, 2, 3, 4] }, true, None))");
 }
 
 #[test]
 fn clear_and_additions_and_settings() {
     // A clear don't need to autobatch the settings that happens AFTER there is no documents
-    debug_snapshot!(autobatch_from(true, None, [doc_clr(), settings(true)]), @"Some((DocumentClear { ids: [0] }, false))");
+    debug_snapshot!(autobatch_from(true, None, [doc_clr(), settings(true)]), @"Some((DocumentClear { ids: [0] }, false, Some(DocumentOperationWithSettings { id: 1 })))");
 
-    debug_snapshot!(autobatch_from(true, None, [settings(true), doc_clr(), settings(true)]), @"Some((ClearAndSettings { other: [1], allow_index_creation: true, settings_ids: [0, 2] }, true))");
-    debug_snapshot!(autobatch_from(true, None, [doc_imp(ReplaceDocuments, true, None), settings(true), doc_clr()]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0] }, true))");
-    debug_snapshot!(autobatch_from(true, None, [doc_imp(UpdateDocuments, true, None), settings(true), doc_clr()]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0] }, true))");
+    debug_snapshot!(autobatch_from(true, None, [settings(true), doc_clr(), settings(true)]), @"Some((ClearAndSettings { other: [1], allow_index_creation: true, settings_ids: [0, 2] }, true, None))");
+    debug_snapshot!(autobatch_from(true, None, [doc_imp(ReplaceDocuments, true, None), settings(true), doc_clr()]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0] }, true, Some(DocumentOperationWithSettings { id: 1 })))");
+    debug_snapshot!(autobatch_from(true, None, [doc_imp(UpdateDocuments, true, None), settings(true), doc_clr()]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0] }, true, Some(DocumentOperationWithSettings { id: 1 })))");
 }
 
 #[test]
 fn anything_and_index_deletion() {
     // The `IndexDeletion` doesn't batch with anything that happens AFTER.
-    debug_snapshot!(autobatch_from(true, None, [idx_del(), doc_imp(ReplaceDocuments, true, None)]), @"Some((IndexDeletion { ids: [0] }, false))");
-    debug_snapshot!(autobatch_from(true, None, [idx_del(), doc_imp(UpdateDocuments, true, None)]), @"Some((IndexDeletion { ids: [0] }, false))");
-    debug_snapshot!(autobatch_from(true, None, [idx_del(), doc_imp(ReplaceDocuments, false, None)]), @"Some((IndexDeletion { ids: [0] }, false))");
-    debug_snapshot!(autobatch_from(true, None, [idx_del(), doc_imp(UpdateDocuments, false, None)]), @"Some((IndexDeletion { ids: [0] }, false))");
-    debug_snapshot!(autobatch_from(true, None, [idx_del(), doc_del()]), @"Some((IndexDeletion { ids: [0] }, false))");
-    debug_snapshot!(autobatch_from(true, None, [idx_del(), doc_del_fil()]), @"Some((IndexDeletion { ids: [0] }, false))");
-    debug_snapshot!(autobatch_from(true, None, [idx_del(), doc_clr()]), @"Some((IndexDeletion { ids: [0] }, false))");
-    debug_snapshot!(autobatch_from(true, None, [idx_del(), settings(true)]), @"Some((IndexDeletion { ids: [0] }, false))");
-    debug_snapshot!(autobatch_from(true, None, [idx_del(), settings(false)]), @"Some((IndexDeletion { ids: [0] }, false))");
+    debug_snapshot!(autobatch_from(true, None, [idx_del(), doc_imp(ReplaceDocuments, true, None)]), @"Some((IndexDeletion { ids: [0] }, false, Some(IndexDeletion { id: 0 })))");
+    debug_snapshot!(autobatch_from(true, None, [idx_del(), doc_imp(UpdateDocuments, true, None)]), @"Some((IndexDeletion { ids: [0] }, false, Some(IndexDeletion { id: 0 })))");
+    debug_snapshot!(autobatch_from(true, None, [idx_del(), doc_imp(ReplaceDocuments, false, None)]), @"Some((IndexDeletion { ids: [0] }, false, Some(IndexDeletion { id: 0 })))");
+    debug_snapshot!(autobatch_from(true, None, [idx_del(), doc_imp(UpdateDocuments, false, None)]), @"Some((IndexDeletion { ids: [0] }, false, Some(IndexDeletion { id: 0 })))");
+    debug_snapshot!(autobatch_from(true, None, [idx_del(), doc_del()]), @"Some((IndexDeletion { ids: [0] }, false, Some(IndexDeletion { id: 0 })))");
+    debug_snapshot!(autobatch_from(true, None, [idx_del(), doc_del_fil()]), @"Some((IndexDeletion { ids: [0] }, false, Some(IndexDeletion { id: 0 })))");
+    debug_snapshot!(autobatch_from(true, None, [idx_del(), doc_clr()]), @"Some((IndexDeletion { ids: [0] }, false, Some(IndexDeletion { id: 0 })))");
+    debug_snapshot!(autobatch_from(true, None, [idx_del(), settings(true)]), @"Some((IndexDeletion { ids: [0] }, false, Some(IndexDeletion { id: 0 })))");
+    debug_snapshot!(autobatch_from(true, None, [idx_del(), settings(false)]), @"Some((IndexDeletion { ids: [0] }, false, Some(IndexDeletion { id: 0 })))");
 
-    debug_snapshot!(autobatch_from(false,None,  [idx_del(), doc_imp(ReplaceDocuments, true, None)]), @"Some((IndexDeletion { ids: [0] }, false))");
-    debug_snapshot!(autobatch_from(false,None,  [idx_del(), doc_imp(UpdateDocuments, true, None)]), @"Some((IndexDeletion { ids: [0] }, false))");
-    debug_snapshot!(autobatch_from(false,None,  [idx_del(), doc_imp(ReplaceDocuments, false, None)]), @"Some((IndexDeletion { ids: [0] }, false))");
-    debug_snapshot!(autobatch_from(false,None,  [idx_del(), doc_imp(UpdateDocuments, false, None)]), @"Some((IndexDeletion { ids: [0] }, false))");
-    debug_snapshot!(autobatch_from(false,None,  [idx_del(), doc_del()]), @"Some((IndexDeletion { ids: [0] }, false))");
-    debug_snapshot!(autobatch_from(false,None,  [idx_del(), doc_del_fil()]), @"Some((IndexDeletion { ids: [0] }, false))");
-    debug_snapshot!(autobatch_from(false,None,  [idx_del(), doc_clr()]), @"Some((IndexDeletion { ids: [0] }, false))");
-    debug_snapshot!(autobatch_from(false,None,  [idx_del(), settings(true)]), @"Some((IndexDeletion { ids: [0] }, false))");
-    debug_snapshot!(autobatch_from(false,None,  [idx_del(), settings(false)]), @"Some((IndexDeletion { ids: [0] }, false))");
+    debug_snapshot!(autobatch_from(false,None,  [idx_del(), doc_imp(ReplaceDocuments, true, None)]), @"Some((IndexDeletion { ids: [0] }, false, Some(IndexDeletion { id: 0 })))");
+    debug_snapshot!(autobatch_from(false,None,  [idx_del(), doc_imp(UpdateDocuments, true, None)]), @"Some((IndexDeletion { ids: [0] }, false, Some(IndexDeletion { id: 0 })))");
+    debug_snapshot!(autobatch_from(false,None,  [idx_del(), doc_imp(ReplaceDocuments, false, None)]), @"Some((IndexDeletion { ids: [0] }, false, Some(IndexDeletion { id: 0 })))");
+    debug_snapshot!(autobatch_from(false,None,  [idx_del(), doc_imp(UpdateDocuments, false, None)]), @"Some((IndexDeletion { ids: [0] }, false, Some(IndexDeletion { id: 0 })))");
+    debug_snapshot!(autobatch_from(false,None,  [idx_del(), doc_del()]), @"Some((IndexDeletion { ids: [0] }, false, Some(IndexDeletion { id: 0 })))");
+    debug_snapshot!(autobatch_from(false,None,  [idx_del(), doc_del_fil()]), @"Some((IndexDeletion { ids: [0] }, false, Some(IndexDeletion { id: 0 })))");
+    debug_snapshot!(autobatch_from(false,None,  [idx_del(), doc_clr()]), @"Some((IndexDeletion { ids: [0] }, false, Some(IndexDeletion { id: 0 })))");
+    debug_snapshot!(autobatch_from(false,None,  [idx_del(), settings(true)]), @"Some((IndexDeletion { ids: [0] }, false, Some(IndexDeletion { id: 0 })))");
+    debug_snapshot!(autobatch_from(false,None,  [idx_del(), settings(false)]), @"Some((IndexDeletion { ids: [0] }, false, Some(IndexDeletion { id: 0 })))");
 
     // The index deletion can accept almost any type of `BatchKind` and transform it to an `IndexDeletion`.
     // First, the basic cases
-    debug_snapshot!(autobatch_from(true, None, [doc_imp(ReplaceDocuments, true, None), idx_del()]), @"Some((IndexDeletion { ids: [0, 1] }, true))");
-    debug_snapshot!(autobatch_from(true, None, [doc_imp(UpdateDocuments, true, None), idx_del()]), @"Some((IndexDeletion { ids: [0, 1] }, true))");
-    debug_snapshot!(autobatch_from(true, None, [doc_imp(ReplaceDocuments, false, None), idx_del()]), @"Some((IndexDeletion { ids: [0, 1] }, false))");
-    debug_snapshot!(autobatch_from(true, None, [doc_imp(UpdateDocuments, false, None), idx_del()]), @"Some((IndexDeletion { ids: [0, 1] }, false))");
-    debug_snapshot!(autobatch_from(true, None, [doc_del(), idx_del()]), @"Some((IndexDeletion { ids: [0, 1] }, false))");
-    debug_snapshot!(autobatch_from(true, None, [doc_del_fil(), idx_del()]), @"Some((IndexDeletion { ids: [0, 1] }, false))");
-    debug_snapshot!(autobatch_from(true, None, [doc_clr(), idx_del()]), @"Some((IndexDeletion { ids: [0, 1] }, false))");
-    debug_snapshot!(autobatch_from(true, None, [settings(true), idx_del()]), @"Some((IndexDeletion { ids: [0, 1] }, true))");
-    debug_snapshot!(autobatch_from(true, None, [settings(false), idx_del()]), @"Some((IndexDeletion { ids: [0, 1] }, false))");
+    debug_snapshot!(autobatch_from(true, None, [doc_imp(ReplaceDocuments, true, None), idx_del()]), @"Some((IndexDeletion { ids: [0, 1] }, true, Some(IndexDeletion { id: 1 })))");
+    debug_snapshot!(autobatch_from(true, None, [doc_imp(UpdateDocuments, true, None), idx_del()]), @"Some((IndexDeletion { ids: [0, 1] }, true, Some(IndexDeletion { id: 1 })))");
+    debug_snapshot!(autobatch_from(true, None, [doc_imp(ReplaceDocuments, false, None), idx_del()]), @"Some((IndexDeletion { ids: [0, 1] }, false, Some(IndexDeletion { id: 1 })))");
+    debug_snapshot!(autobatch_from(true, None, [doc_imp(UpdateDocuments, false, None), idx_del()]), @"Some((IndexDeletion { ids: [0, 1] }, false, Some(IndexDeletion { id: 1 })))");
+    debug_snapshot!(autobatch_from(true, None, [doc_del(), idx_del()]), @"Some((IndexDeletion { ids: [0, 1] }, false, Some(IndexDeletion { id: 1 })))");
+    debug_snapshot!(autobatch_from(true, None, [doc_del_fil(), idx_del()]), @"Some((IndexDeletion { ids: [0, 1] }, false, Some(IndexDeletion { id: 1 })))");
+    debug_snapshot!(autobatch_from(true, None, [doc_clr(), idx_del()]), @"Some((IndexDeletion { ids: [0, 1] }, false, Some(IndexDeletion { id: 1 })))");
+    debug_snapshot!(autobatch_from(true, None, [settings(true), idx_del()]), @"Some((IndexDeletion { ids: [0, 1] }, true, Some(IndexDeletion { id: 1 })))");
+    debug_snapshot!(autobatch_from(true, None, [settings(false), idx_del()]), @"Some((IndexDeletion { ids: [0, 1] }, false, Some(IndexDeletion { id: 1 })))");
 
-    debug_snapshot!(autobatch_from(false,None,  [doc_imp(ReplaceDocuments, true, None), idx_del()]), @"Some((IndexDeletion { ids: [0, 1] }, true))");
-    debug_snapshot!(autobatch_from(false,None,  [doc_imp(UpdateDocuments, true, None), idx_del()]), @"Some((IndexDeletion { ids: [0, 1] }, true))");
-    debug_snapshot!(autobatch_from(false,None,  [doc_imp(ReplaceDocuments, false, None), idx_del()]), @"Some((IndexDeletion { ids: [0, 1] }, false))");
-    debug_snapshot!(autobatch_from(false,None,  [doc_imp(UpdateDocuments, false, None), idx_del()]), @"Some((IndexDeletion { ids: [0, 1] }, false))");
-    debug_snapshot!(autobatch_from(false,None,  [doc_del(), idx_del()]), @"Some((IndexDeletion { ids: [0, 1] }, false))");
-    debug_snapshot!(autobatch_from(false,None,  [doc_del_fil(), idx_del()]), @"Some((IndexDeletion { ids: [0, 1] }, false))");
-    debug_snapshot!(autobatch_from(false,None,  [doc_clr(), idx_del()]), @"Some((IndexDeletion { ids: [0, 1] }, false))");
-    debug_snapshot!(autobatch_from(false,None,  [settings(true), idx_del()]), @"Some((IndexDeletion { ids: [0, 1] }, true))");
-    debug_snapshot!(autobatch_from(false,None,  [settings(false), idx_del()]), @"Some((IndexDeletion { ids: [0, 1] }, false))");
+    debug_snapshot!(autobatch_from(false,None,  [doc_imp(ReplaceDocuments, true, None), idx_del()]), @"Some((IndexDeletion { ids: [0, 1] }, true, Some(IndexDeletion { id: 1 })))");
+    debug_snapshot!(autobatch_from(false,None,  [doc_imp(UpdateDocuments, true, None), idx_del()]), @"Some((IndexDeletion { ids: [0, 1] }, true, Some(IndexDeletion { id: 1 })))");
+    debug_snapshot!(autobatch_from(false,None,  [doc_imp(ReplaceDocuments, false, None), idx_del()]), @"Some((IndexDeletion { ids: [0, 1] }, false, Some(IndexDeletion { id: 1 })))");
+    debug_snapshot!(autobatch_from(false,None,  [doc_imp(UpdateDocuments, false, None), idx_del()]), @"Some((IndexDeletion { ids: [0, 1] }, false, Some(IndexDeletion { id: 1 })))");
+    debug_snapshot!(autobatch_from(false,None,  [doc_del(), idx_del()]), @"Some((IndexDeletion { ids: [0, 1] }, false, Some(IndexDeletion { id: 1 })))");
+    debug_snapshot!(autobatch_from(false,None,  [doc_del_fil(), idx_del()]), @"Some((IndexDeletion { ids: [0, 1] }, false, Some(IndexDeletion { id: 1 })))");
+    debug_snapshot!(autobatch_from(false,None,  [doc_clr(), idx_del()]), @"Some((IndexDeletion { ids: [0, 1] }, false, Some(IndexDeletion { id: 1 })))");
+    debug_snapshot!(autobatch_from(false,None,  [settings(true), idx_del()]), @"Some((IndexDeletion { ids: [0, 1] }, true, Some(IndexDeletion { id: 1 })))");
+    debug_snapshot!(autobatch_from(false,None,  [settings(false), idx_del()]), @"Some((IndexDeletion { ids: [0, 1] }, false, Some(IndexDeletion { id: 1 })))");
 }
 
 #[test]
 fn allowed_and_disallowed_index_creation() {
     // `DocumentImport` can't be mixed with those disallowed to do so except if the index already exists.
-    debug_snapshot!(autobatch_from(true, None, [doc_imp(ReplaceDocuments, false, None), doc_imp(ReplaceDocuments, true, None)]), @"Some((DocumentOperation { allow_index_creation: false, primary_key: None, operation_ids: [0, 1] }, false))");
-    debug_snapshot!(autobatch_from(true, None, [doc_imp(ReplaceDocuments, true, None), doc_imp(ReplaceDocuments, true, None)]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0, 1] }, true))");
-    debug_snapshot!(autobatch_from(true, None, [doc_imp(ReplaceDocuments, false, None), doc_imp(ReplaceDocuments, false, None)]), @"Some((DocumentOperation { allow_index_creation: false, primary_key: None, operation_ids: [0, 1] }, false))");
-    debug_snapshot!(autobatch_from(true, None, [doc_imp(ReplaceDocuments, true, None), settings(true)]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0] }, true))");
-    debug_snapshot!(autobatch_from(true, None, [doc_imp(ReplaceDocuments, false, None), settings(true)]), @"Some((DocumentOperation { allow_index_creation: false, primary_key: None, operation_ids: [0] }, false))");
+    debug_snapshot!(autobatch_from(true, None, [doc_imp(ReplaceDocuments, false, None), doc_imp(ReplaceDocuments, true, None)]), @"Some((DocumentOperation { allow_index_creation: false, primary_key: None, operation_ids: [0, 1] }, false, None))");
+    debug_snapshot!(autobatch_from(true, None, [doc_imp(ReplaceDocuments, true, None), doc_imp(ReplaceDocuments, true, None)]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0, 1] }, true, None))");
+    debug_snapshot!(autobatch_from(true, None, [doc_imp(ReplaceDocuments, false, None), doc_imp(ReplaceDocuments, false, None)]), @"Some((DocumentOperation { allow_index_creation: false, primary_key: None, operation_ids: [0, 1] }, false, None))");
+    debug_snapshot!(autobatch_from(true, None, [doc_imp(ReplaceDocuments, true, None), settings(true)]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0] }, true, Some(DocumentOperationWithSettings { id: 1 })))");
+    debug_snapshot!(autobatch_from(true, None, [doc_imp(ReplaceDocuments, false, None), settings(true)]), @"Some((DocumentOperation { allow_index_creation: false, primary_key: None, operation_ids: [0] }, false, Some(DocumentOperationWithSettings { id: 1 })))");
 
-    debug_snapshot!(autobatch_from(false,None,  [doc_imp(ReplaceDocuments, false, None), doc_imp(ReplaceDocuments, true, None)]), @"Some((DocumentOperation { allow_index_creation: false, primary_key: None, operation_ids: [0] }, false))");
-    debug_snapshot!(autobatch_from(false,None,  [doc_imp(ReplaceDocuments, true, None), doc_imp(ReplaceDocuments, true, None)]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0, 1] }, true))");
-    debug_snapshot!(autobatch_from(false,None,  [doc_imp(ReplaceDocuments, false, None), doc_imp(ReplaceDocuments, false, None)]), @"Some((DocumentOperation { allow_index_creation: false, primary_key: None, operation_ids: [0, 1] }, false))");
-    debug_snapshot!(autobatch_from(false,None,  [doc_imp(ReplaceDocuments, true, None), settings(true)]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0] }, true))");
-    debug_snapshot!(autobatch_from(false,None,  [doc_imp(ReplaceDocuments, false, None), settings(true)]), @"Some((DocumentOperation { allow_index_creation: false, primary_key: None, operation_ids: [0] }, false))");
+    debug_snapshot!(autobatch_from(false,None,  [doc_imp(ReplaceDocuments, false, None), doc_imp(ReplaceDocuments, true, None)]), @"Some((DocumentOperation { allow_index_creation: false, primary_key: None, operation_ids: [0] }, false, Some(IndexCreationMismatch { id: 1 })))");
+    debug_snapshot!(autobatch_from(false,None,  [doc_imp(ReplaceDocuments, true, None), doc_imp(ReplaceDocuments, true, None)]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0, 1] }, true, None))");
+    debug_snapshot!(autobatch_from(false,None,  [doc_imp(ReplaceDocuments, false, None), doc_imp(ReplaceDocuments, false, None)]), @"Some((DocumentOperation { allow_index_creation: false, primary_key: None, operation_ids: [0, 1] }, false, None))");
+    debug_snapshot!(autobatch_from(false,None,  [doc_imp(ReplaceDocuments, true, None), settings(true)]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0] }, true, Some(DocumentOperationWithSettings { id: 1 })))");
+    debug_snapshot!(autobatch_from(false,None,  [doc_imp(ReplaceDocuments, false, None), settings(true)]), @"Some((DocumentOperation { allow_index_creation: false, primary_key: None, operation_ids: [0] }, false, Some(IndexCreationMismatch { id: 1 })))");
 
     // batch deletion and addition
-    debug_snapshot!(autobatch_from(false, None, [doc_del(), doc_imp(ReplaceDocuments, true, Some("catto"))]), @"Some((DocumentDeletion { deletion_ids: [0], includes_by_filter: false }, false))");
-    debug_snapshot!(autobatch_from(false, None, [doc_del(), doc_imp(UpdateDocuments, true, Some("catto"))]), @"Some((DocumentDeletion { deletion_ids: [0], includes_by_filter: false }, false))");
-    debug_snapshot!(autobatch_from(false, None, [doc_del(), doc_imp(ReplaceDocuments, true, None)]), @"Some((DocumentDeletion { deletion_ids: [0], includes_by_filter: false }, false))");
-    debug_snapshot!(autobatch_from(false, None, [doc_del(), doc_imp(UpdateDocuments, true, None)]), @"Some((DocumentDeletion { deletion_ids: [0], includes_by_filter: false }, false))");
+    debug_snapshot!(autobatch_from(false, None, [doc_del(), doc_imp(ReplaceDocuments, true, Some("catto"))]), @"Some((DocumentDeletion { deletion_ids: [0], includes_by_filter: false }, false, Some(IndexCreationMismatch { id: 1 })))");
+    debug_snapshot!(autobatch_from(false, None, [doc_del(), doc_imp(UpdateDocuments, true, Some("catto"))]), @"Some((DocumentDeletion { deletion_ids: [0], includes_by_filter: false }, false, Some(IndexCreationMismatch { id: 1 })))");
+    debug_snapshot!(autobatch_from(false, None, [doc_del(), doc_imp(ReplaceDocuments, true, None)]), @"Some((DocumentDeletion { deletion_ids: [0], includes_by_filter: false }, false, Some(IndexCreationMismatch { id: 1 })))");
+    debug_snapshot!(autobatch_from(false, None, [doc_del(), doc_imp(UpdateDocuments, true, None)]), @"Some((DocumentDeletion { deletion_ids: [0], includes_by_filter: false }, false, Some(IndexCreationMismatch { id: 1 })))");
 }
 
 #[test]
 fn autobatch_primary_key() {
     // ==> If I have a pk
     // With a single update
-    debug_snapshot!(autobatch_from(true, Some("id"), [doc_imp(ReplaceDocuments, true, None)]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0] }, true))");
-    debug_snapshot!(autobatch_from(true, Some("id"), [doc_imp(ReplaceDocuments, true, Some("id"))]), @r###"Some((DocumentOperation { allow_index_creation: true, primary_key: Some("id"), operation_ids: [0] }, true))"###);
-    debug_snapshot!(autobatch_from(true, Some("id"), [doc_imp(ReplaceDocuments, true, Some("other"))]), @r###"Some((DocumentOperation { allow_index_creation: true, primary_key: Some("other"), operation_ids: [0] }, true))"###);
+    debug_snapshot!(autobatch_from(true, Some("id"), [doc_imp(ReplaceDocuments, true, None)]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0] }, true, None))");
+    debug_snapshot!(autobatch_from(true, Some("id"), [doc_imp(ReplaceDocuments, true, Some("id"))]), @r###"Some((DocumentOperation { allow_index_creation: true, primary_key: Some("id"), operation_ids: [0] }, true, None))"###);
+    debug_snapshot!(autobatch_from(true, Some("id"), [doc_imp(ReplaceDocuments, true, Some("other"))]), @r###"Some((DocumentOperation { allow_index_creation: true, primary_key: Some("other"), operation_ids: [0] }, true, Some(PrimaryKeyIndexMismatch { id: 0, in_index: "id", in_task: "other" })))"###);
 
     // With a multiple updates
-    debug_snapshot!(autobatch_from(true, Some("id"), [doc_imp(ReplaceDocuments, true, None), doc_imp(ReplaceDocuments, true, None)]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0, 1] }, true))");
-    debug_snapshot!(autobatch_from(true, Some("id"), [doc_imp(ReplaceDocuments, true, None), doc_imp(ReplaceDocuments, true, Some("id"))]), @r###"Some((DocumentOperation { allow_index_creation: true, primary_key: Some("id"), operation_ids: [0, 1] }, true))"###);
-    debug_snapshot!(autobatch_from(true, Some("id"), [doc_imp(ReplaceDocuments, true, None), doc_imp(ReplaceDocuments, true, Some("id")), doc_imp(ReplaceDocuments, true, None)]), @r###"Some((DocumentOperation { allow_index_creation: true, primary_key: Some("id"), operation_ids: [0, 1] }, true))"###);
-    debug_snapshot!(autobatch_from(true, Some("id"), [doc_imp(ReplaceDocuments, true, None), doc_imp(ReplaceDocuments, true, Some("other"))]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0] }, true))");
-    debug_snapshot!(autobatch_from(true, Some("id"), [doc_imp(ReplaceDocuments, true, None), doc_imp(ReplaceDocuments, true, Some("other")), doc_imp(ReplaceDocuments, true, None)]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0] }, true))");
-    debug_snapshot!(autobatch_from(true, Some("id"), [doc_imp(ReplaceDocuments, true, None), doc_imp(ReplaceDocuments, true, Some("other")), doc_imp(ReplaceDocuments, true, Some("id"))]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0] }, true))");
+    debug_snapshot!(autobatch_from(true, Some("id"), [doc_imp(ReplaceDocuments, true, None), doc_imp(ReplaceDocuments, true, None)]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0, 1] }, true, None))");
+    debug_snapshot!(autobatch_from(true, Some("id"), [doc_imp(ReplaceDocuments, true, None), doc_imp(ReplaceDocuments, true, Some("id"))]), @r###"Some((DocumentOperation { allow_index_creation: true, primary_key: Some("id"), operation_ids: [0, 1] }, true, None))"###);
+    debug_snapshot!(autobatch_from(true, Some("id"), [doc_imp(ReplaceDocuments, true, None), doc_imp(ReplaceDocuments, true, Some("id")), doc_imp(ReplaceDocuments, true, None)]), @r###"Some((DocumentOperation { allow_index_creation: true, primary_key: Some("id"), operation_ids: [0, 1, 2] }, true, None))"###);
+    debug_snapshot!(autobatch_from(true, Some("id"), [doc_imp(ReplaceDocuments, true, None), doc_imp(ReplaceDocuments, true, Some("other"))]), @r###"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0] }, true, Some(PrimaryKeyMismatch { id: 1, reason: TaskPrimaryKeyDifferFromIndexPrimaryKey { task_pk: "other", index_pk: "id" } })))"###);
+    debug_snapshot!(autobatch_from(true, Some("id"), [doc_imp(ReplaceDocuments, true, None), doc_imp(ReplaceDocuments, true, Some("other")), doc_imp(ReplaceDocuments, true, None)]), @r###"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0] }, true, Some(PrimaryKeyMismatch { id: 1, reason: TaskPrimaryKeyDifferFromIndexPrimaryKey { task_pk: "other", index_pk: "id" } })))"###);
+    debug_snapshot!(autobatch_from(true, Some("id"), [doc_imp(ReplaceDocuments, true, None), doc_imp(ReplaceDocuments, true, Some("other")), doc_imp(ReplaceDocuments, true, Some("id"))]), @r###"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0] }, true, Some(PrimaryKeyMismatch { id: 1, reason: TaskPrimaryKeyDifferFromIndexPrimaryKey { task_pk: "other", index_pk: "id" } })))"###);
 
-    debug_snapshot!(autobatch_from(true, Some("id"), [doc_imp(ReplaceDocuments, true, Some("id")), doc_imp(ReplaceDocuments, true, None)]), @r###"Some((DocumentOperation { allow_index_creation: true, primary_key: Some("id"), operation_ids: [0] }, true))"###);
-    debug_snapshot!(autobatch_from(true, Some("id"), [doc_imp(ReplaceDocuments, true, Some("id")), doc_imp(ReplaceDocuments, true, Some("id"))]), @r###"Some((DocumentOperation { allow_index_creation: true, primary_key: Some("id"), operation_ids: [0, 1] }, true))"###);
-    debug_snapshot!(autobatch_from(true, Some("id"), [doc_imp(ReplaceDocuments, true, Some("id")), doc_imp(ReplaceDocuments, true, Some("id")), doc_imp(ReplaceDocuments, true, None)]), @r###"Some((DocumentOperation { allow_index_creation: true, primary_key: Some("id"), operation_ids: [0, 1] }, true))"###);
-    debug_snapshot!(autobatch_from(true, Some("id"), [doc_imp(ReplaceDocuments, true, Some("id")), doc_imp(ReplaceDocuments, true, Some("other"))]), @r###"Some((DocumentOperation { allow_index_creation: true, primary_key: Some("id"), operation_ids: [0] }, true))"###);
-    debug_snapshot!(autobatch_from(true, Some("id"), [doc_imp(ReplaceDocuments, true, Some("id")), doc_imp(ReplaceDocuments, true, Some("other")), doc_imp(ReplaceDocuments, true, None)]), @r###"Some((DocumentOperation { allow_index_creation: true, primary_key: Some("id"), operation_ids: [0] }, true))"###);
-    debug_snapshot!(autobatch_from(true, Some("id"), [doc_imp(ReplaceDocuments, true, Some("id")), doc_imp(ReplaceDocuments, true, Some("other")), doc_imp(ReplaceDocuments, true, Some("id"))]), @r###"Some((DocumentOperation { allow_index_creation: true, primary_key: Some("id"), operation_ids: [0] }, true))"###);
+    debug_snapshot!(autobatch_from(true, Some("id"), [doc_imp(ReplaceDocuments, true, Some("id")), doc_imp(ReplaceDocuments, true, None)]), @r###"Some((DocumentOperation { allow_index_creation: true, primary_key: Some("id"), operation_ids: [0, 1] }, true, None))"###);
+    debug_snapshot!(autobatch_from(true, Some("id"), [doc_imp(ReplaceDocuments, true, Some("id")), doc_imp(ReplaceDocuments, true, Some("id"))]), @r###"Some((DocumentOperation { allow_index_creation: true, primary_key: Some("id"), operation_ids: [0, 1] }, true, None))"###);
+    debug_snapshot!(autobatch_from(true, Some("id"), [doc_imp(ReplaceDocuments, true, Some("id")), doc_imp(ReplaceDocuments, true, Some("id")), doc_imp(ReplaceDocuments, true, None)]), @r###"Some((DocumentOperation { allow_index_creation: true, primary_key: Some("id"), operation_ids: [0, 1, 2] }, true, None))"###);
+    debug_snapshot!(autobatch_from(true, Some("id"), [doc_imp(ReplaceDocuments, true, Some("id")), doc_imp(ReplaceDocuments, true, Some("other"))]), @r###"Some((DocumentOperation { allow_index_creation: true, primary_key: Some("id"), operation_ids: [0] }, true, Some(PrimaryKeyMismatch { id: 1, reason: TaskPrimaryKeyDifferFromIndexPrimaryKey { task_pk: "other", index_pk: "id" } })))"###);
+    debug_snapshot!(autobatch_from(true, Some("id"), [doc_imp(ReplaceDocuments, true, Some("id")), doc_imp(ReplaceDocuments, true, Some("other")), doc_imp(ReplaceDocuments, true, None)]), @r###"Some((DocumentOperation { allow_index_creation: true, primary_key: Some("id"), operation_ids: [0] }, true, Some(PrimaryKeyMismatch { id: 1, reason: TaskPrimaryKeyDifferFromIndexPrimaryKey { task_pk: "other", index_pk: "id" } })))"###);
+    debug_snapshot!(autobatch_from(true, Some("id"), [doc_imp(ReplaceDocuments, true, Some("id")), doc_imp(ReplaceDocuments, true, Some("other")), doc_imp(ReplaceDocuments, true, Some("id"))]), @r###"Some((DocumentOperation { allow_index_creation: true, primary_key: Some("id"), operation_ids: [0] }, true, Some(PrimaryKeyMismatch { id: 1, reason: TaskPrimaryKeyDifferFromIndexPrimaryKey { task_pk: "other", index_pk: "id" } })))"###);
 
-    debug_snapshot!(autobatch_from(true, Some("id"), [doc_imp(ReplaceDocuments, true, Some("other")), doc_imp(ReplaceDocuments, true, None)]), @r###"Some((DocumentOperation { allow_index_creation: true, primary_key: Some("other"), operation_ids: [0] }, true))"###);
-    debug_snapshot!(autobatch_from(true, Some("id"), [doc_imp(ReplaceDocuments, true, Some("other")), doc_imp(ReplaceDocuments, true, Some("id"))]), @r###"Some((DocumentOperation { allow_index_creation: true, primary_key: Some("other"), operation_ids: [0] }, true))"###);
-    debug_snapshot!(autobatch_from(true, Some("id"), [doc_imp(ReplaceDocuments, true, Some("other")), doc_imp(ReplaceDocuments, true, Some("id")), doc_imp(ReplaceDocuments, true, None)]), @r###"Some((DocumentOperation { allow_index_creation: true, primary_key: Some("other"), operation_ids: [0] }, true))"###);
-    debug_snapshot!(autobatch_from(true, Some("id"), [doc_imp(ReplaceDocuments, true, Some("other")), doc_imp(ReplaceDocuments, true, Some("other"))]), @r###"Some((DocumentOperation { allow_index_creation: true, primary_key: Some("other"), operation_ids: [0] }, true))"###);
-    debug_snapshot!(autobatch_from(true, Some("id"), [doc_imp(ReplaceDocuments, true, Some("other")), doc_imp(ReplaceDocuments, true, Some("other")), doc_imp(ReplaceDocuments, true, None)]), @r###"Some((DocumentOperation { allow_index_creation: true, primary_key: Some("other"), operation_ids: [0] }, true))"###);
-    debug_snapshot!(autobatch_from(true, Some("id"), [doc_imp(ReplaceDocuments, true, Some("other")), doc_imp(ReplaceDocuments, true, Some("other")), doc_imp(ReplaceDocuments, true, Some("id"))]), @r###"Some((DocumentOperation { allow_index_creation: true, primary_key: Some("other"), operation_ids: [0] }, true))"###);
+    debug_snapshot!(autobatch_from(true, Some("id"), [doc_imp(ReplaceDocuments, true, Some("other")), doc_imp(ReplaceDocuments, true, None)]), @r###"Some((DocumentOperation { allow_index_creation: true, primary_key: Some("other"), operation_ids: [0] }, true, Some(PrimaryKeyIndexMismatch { id: 0, in_index: "id", in_task: "other" })))"###);
+    debug_snapshot!(autobatch_from(true, Some("id"), [doc_imp(ReplaceDocuments, true, Some("other")), doc_imp(ReplaceDocuments, true, Some("id"))]), @r###"Some((DocumentOperation { allow_index_creation: true, primary_key: Some("other"), operation_ids: [0] }, true, Some(PrimaryKeyIndexMismatch { id: 0, in_index: "id", in_task: "other" })))"###);
+    debug_snapshot!(autobatch_from(true, Some("id"), [doc_imp(ReplaceDocuments, true, Some("other")), doc_imp(ReplaceDocuments, true, Some("id")), doc_imp(ReplaceDocuments, true, None)]), @r###"Some((DocumentOperation { allow_index_creation: true, primary_key: Some("other"), operation_ids: [0] }, true, Some(PrimaryKeyIndexMismatch { id: 0, in_index: "id", in_task: "other" })))"###);
+    debug_snapshot!(autobatch_from(true, Some("id"), [doc_imp(ReplaceDocuments, true, Some("other")), doc_imp(ReplaceDocuments, true, Some("other"))]), @r###"Some((DocumentOperation { allow_index_creation: true, primary_key: Some("other"), operation_ids: [0] }, true, Some(PrimaryKeyIndexMismatch { id: 0, in_index: "id", in_task: "other" })))"###);
+    debug_snapshot!(autobatch_from(true, Some("id"), [doc_imp(ReplaceDocuments, true, Some("other")), doc_imp(ReplaceDocuments, true, Some("other")), doc_imp(ReplaceDocuments, true, None)]), @r###"Some((DocumentOperation { allow_index_creation: true, primary_key: Some("other"), operation_ids: [0] }, true, Some(PrimaryKeyIndexMismatch { id: 0, in_index: "id", in_task: "other" })))"###);
+    debug_snapshot!(autobatch_from(true, Some("id"), [doc_imp(ReplaceDocuments, true, Some("other")), doc_imp(ReplaceDocuments, true, Some("other")), doc_imp(ReplaceDocuments, true, Some("id"))]), @r###"Some((DocumentOperation { allow_index_creation: true, primary_key: Some("other"), operation_ids: [0] }, true, Some(PrimaryKeyIndexMismatch { id: 0, in_index: "id", in_task: "other" })))"###);
 
     // ==> If I don't have a pk
     // With a single update
-    debug_snapshot!(autobatch_from(true, None, [doc_imp(ReplaceDocuments, true, None)]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0] }, true))");
-    debug_snapshot!(autobatch_from(true, None, [doc_imp(ReplaceDocuments, true, Some("id"))]), @r###"Some((DocumentOperation { allow_index_creation: true, primary_key: Some("id"), operation_ids: [0] }, true))"###);
-    debug_snapshot!(autobatch_from(true, None, [doc_imp(ReplaceDocuments, true, Some("other"))]), @r###"Some((DocumentOperation { allow_index_creation: true, primary_key: Some("other"), operation_ids: [0] }, true))"###);
+    debug_snapshot!(autobatch_from(true, None, [doc_imp(ReplaceDocuments, true, None)]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0] }, true, None))");
+    debug_snapshot!(autobatch_from(true, None, [doc_imp(ReplaceDocuments, true, Some("id"))]), @r###"Some((DocumentOperation { allow_index_creation: true, primary_key: Some("id"), operation_ids: [0] }, true, None))"###);
+    debug_snapshot!(autobatch_from(true, None, [doc_imp(ReplaceDocuments, true, Some("other"))]), @r###"Some((DocumentOperation { allow_index_creation: true, primary_key: Some("other"), operation_ids: [0] }, true, None))"###);
 
     // With a multiple updates
-    debug_snapshot!(autobatch_from(true, None, [doc_imp(ReplaceDocuments, true, None), doc_imp(ReplaceDocuments, true, None)]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0, 1] }, true))");
-    debug_snapshot!(autobatch_from(true, None, [doc_imp(ReplaceDocuments, true, None), doc_imp(ReplaceDocuments, true, Some("id"))]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0] }, true))");
-    debug_snapshot!(autobatch_from(true, None, [doc_imp(ReplaceDocuments, true, Some("id")), doc_imp(ReplaceDocuments, true, None)]), @r###"Some((DocumentOperation { allow_index_creation: true, primary_key: Some("id"), operation_ids: [0] }, true))"###);
+    debug_snapshot!(autobatch_from(true, None, [doc_imp(ReplaceDocuments, true, None), doc_imp(ReplaceDocuments, true, None)]), @"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0, 1] }, true, None))");
+    debug_snapshot!(autobatch_from(true, None, [doc_imp(ReplaceDocuments, true, None), doc_imp(ReplaceDocuments, true, Some("id"))]), @r###"Some((DocumentOperation { allow_index_creation: true, primary_key: None, operation_ids: [0] }, true, Some(PrimaryKeyMismatch { id: 1, reason: CannotInterfereWithPrimaryKeyGuessing { task_pk: "id" } })))"###);
+    debug_snapshot!(autobatch_from(true, None, [doc_imp(ReplaceDocuments, true, Some("id")), doc_imp(ReplaceDocuments, true, None)]), @r###"Some((DocumentOperation { allow_index_creation: true, primary_key: Some("id"), operation_ids: [0, 1] }, true, None))"###);
 }

crates/index-scheduler/src/scheduler/create_batch.rs

@@ -1,9 +1,10 @@
 use std::fmt;
+use std::io::ErrorKind;
 
 use meilisearch_types::heed::RoTxn;
 use meilisearch_types::milli::update::IndexDocumentsMethod;
 use meilisearch_types::settings::{Settings, Unchecked};
-use meilisearch_types::tasks::{Kind, KindWithContent, Status, Task};
+use meilisearch_types::tasks::{BatchStopReason, Kind, KindWithContent, Status, Task};
 use roaring::RoaringBitmap;
 use uuid::Uuid;
 
@@ -47,6 +48,9 @@ pub(crate) enum Batch {
     IndexSwap {
         task: Task,
     },
+    Export {
+        task: Task,
+    },
     UpgradeDatabase {
         tasks: Vec<Task>,
     },
@@ -103,6 +107,7 @@ impl Batch {
             Batch::TaskCancelation { task, .. }
             | Batch::Dump(task)
             | Batch::IndexCreation { task, .. }
+            | Batch::Export { task }
             | Batch::IndexUpdate { task, .. } => {
                 RoaringBitmap::from_sorted_iter(std::iter::once(task.uid)).unwrap()
             }
@@ -142,6 +147,7 @@ impl Batch {
             | TaskDeletions(_)
             | SnapshotCreation(_)
             | Dump(_)
+            | Export { .. }
             | UpgradeDatabase { .. }
             | IndexSwap { .. } => None,
             IndexOperation { op, .. } => Some(op.index_uid()),
@@ -167,6 +173,7 @@ impl fmt::Display for Batch {
             Batch::IndexUpdate { .. } => f.write_str("IndexUpdate")?,
             Batch::IndexDeletion { .. } => f.write_str("IndexDeletion")?,
             Batch::IndexSwap { .. } => f.write_str("IndexSwap")?,
+            Batch::Export { .. } => f.write_str("Export")?,
             Batch::UpgradeDatabase { .. } => f.write_str("UpgradeDatabase")?,
         };
         match index_uid {
@@ -423,11 +430,13 @@ impl IndexScheduler {
     }
 
     /// Create the next batch to be processed;
-    /// 1. We get the *last* task to cancel.
+    /// 0. We get the *last* task to cancel.
+    /// 1. We get the tasks to upgrade.
     /// 2. We get the *next* task to delete.
-    /// 3. We get the *next* snapshot to process.
-    /// 4. We get the *next* dump to process.
-    /// 5. We get the *next* tasks to process for a specific index.
+    /// 3. We get the *next* export to process.
+    /// 4. We get the *next* snapshot to process.
+    /// 5. We get the *next* dump to process.
+    /// 6. We get the *next* tasks to process for a specific index.
     #[tracing::instrument(level = "trace", skip(self, rtxn), target = "indexing::scheduler")]
     pub(crate) fn create_next_batch(
         &self,
@@ -440,9 +449,23 @@ impl IndexScheduler {
         let mut current_batch = ProcessingBatch::new(batch_id);
 
         let enqueued = &self.queue.tasks.get_status(rtxn, Status::Enqueued)?;
+        let count_total_enqueued = enqueued.len();
         let failed = &self.queue.tasks.get_status(rtxn, Status::Failed)?;
 
-        // 0. The priority over everything is to upgrade the instance
+        // 0. we get the last task to cancel.
+        let to_cancel = self.queue.tasks.get_kind(rtxn, Kind::TaskCancelation)? & enqueued;
+        if let Some(task_id) = to_cancel.max() {
+            let mut task =
+                self.queue.tasks.get_task(rtxn, task_id)?.ok_or(Error::CorruptedTaskQueue)?;
+            current_batch.processing(Some(&mut task));
+            current_batch.reason(BatchStopReason::TaskCannotBeBatched {
+                kind: Kind::TaskCancelation,
+                id: task_id,
+            });
+            return Ok(Some((Batch::TaskCancelation { task }, current_batch)));
+        }
+
+        // 1. We upgrade the instance
         // There shouldn't be multiple upgrade tasks but just in case we're going to batch all of them at the same time
         let upgrade = self.queue.tasks.get_kind(rtxn, Kind::UpgradeDatabase)? & (enqueued | failed);
         if !upgrade.is_empty() {
@@ -453,16 +476,26 @@ impl IndexScheduler {
                 current_batch.uid = batch_uid;
             }
             current_batch.processing(&mut tasks);
+            current_batch
+                .reason(BatchStopReason::TaskKindCannotBeBatched { kind: Kind::UpgradeDatabase });
             return Ok(Some((Batch::UpgradeDatabase { tasks }, current_batch)));
         }
 
-        // 1. we get the last task to cancel.
-        let to_cancel = self.queue.tasks.get_kind(rtxn, Kind::TaskCancelation)? & enqueued;
-        if let Some(task_id) = to_cancel.max() {
-            let mut task =
-                self.queue.tasks.get_task(rtxn, task_id)?.ok_or(Error::CorruptedTaskQueue)?;
-            current_batch.processing(Some(&mut task));
-            return Ok(Some((Batch::TaskCancelation { task }, current_batch)));
+        // check the version of the scheduler here.
+        // if the version is not the current, refuse to batch any additional task.
+        let version = self.version.get_version(rtxn)?;
+        let package_version = (
+            meilisearch_types::versioning::VERSION_MAJOR,
+            meilisearch_types::versioning::VERSION_MINOR,
+            meilisearch_types::versioning::VERSION_PATCH,
+        );
+        if version != Some(package_version) {
+            return Err(Error::UnrecoverableError(Box::new(
+                Error::IndexSchedulerVersionMismatch {
+                    index_scheduler_version: version.unwrap_or((1, 12, 0)),
+                    package_version,
+                },
+            )));
         }
 
         // 2. we get the next task to delete
@@ -470,27 +503,45 @@ impl IndexScheduler {
         if !to_delete.is_empty() {
             let mut tasks = self.queue.tasks.get_existing_tasks(rtxn, to_delete)?;
             current_batch.processing(&mut tasks);
+            current_batch
+                .reason(BatchStopReason::TaskKindCannotBeBatched { kind: Kind::TaskDeletion });
             return Ok(Some((Batch::TaskDeletions(tasks), current_batch)));
         }
 
-        // 3. we batch the snapshot.
+        // 3. we batch the export.
+        let to_export = self.queue.tasks.get_kind(rtxn, Kind::Export)? & enqueued;
+        if !to_export.is_empty() {
+            let task_id = to_export.iter().next().expect("There must be at least one export task");
+            let mut task = self.queue.tasks.get_task(rtxn, task_id)?.unwrap();
+            current_batch.processing([&mut task]);
+            current_batch.reason(BatchStopReason::TaskKindCannotBeBatched { kind: Kind::Export });
+            return Ok(Some((Batch::Export { task }, current_batch)));
+        }
+
+        // 4. we batch the snapshot.
         let to_snapshot = self.queue.tasks.get_kind(rtxn, Kind::SnapshotCreation)? & enqueued;
         if !to_snapshot.is_empty() {
             let mut tasks = self.queue.tasks.get_existing_tasks(rtxn, to_snapshot)?;
             current_batch.processing(&mut tasks);
+            current_batch
+                .reason(BatchStopReason::TaskKindCannotBeBatched { kind: Kind::SnapshotCreation });
             return Ok(Some((Batch::SnapshotCreation(tasks), current_batch)));
         }
 
-        // 4. we batch the dumps.
+        // 5. we batch the dumps.
         let to_dump = self.queue.tasks.get_kind(rtxn, Kind::DumpCreation)? & enqueued;
         if let Some(to_dump) = to_dump.min() {
             let mut task =
                 self.queue.tasks.get_task(rtxn, to_dump)?.ok_or(Error::CorruptedTaskQueue)?;
             current_batch.processing(Some(&mut task));
+            current_batch.reason(BatchStopReason::TaskCannotBeBatched {
+                kind: Kind::DumpCreation,
+                id: task.uid,
+            });
             return Ok(Some((Batch::Dump(task), current_batch)));
         }
 
-        // 5. We make a batch from the unprioritised tasks. Start by taking the next enqueued task.
+        // 6. We make a batch from the unprioritised tasks. Start by taking the next enqueued task.
         let task_id = if let Some(task_id) = enqueued.min() { task_id } else { return Ok(None) };
         let mut task =
             self.queue.tasks.get_task(rtxn, task_id)?.ok_or(Error::CorruptedTaskQueue)?;
@@ -504,6 +555,10 @@ impl IndexScheduler {
         } else {
             assert!(matches!(&task.kind, KindWithContent::IndexSwap { swaps } if swaps.is_empty()));
             current_batch.processing(Some(&mut task));
+            current_batch.reason(BatchStopReason::TaskCannotBeBatched {
+                kind: Kind::IndexSwap,
+                id: task.uid,
+            });
             return Ok(Some((Batch::IndexSwap { task }, current_batch)));
         };
 
@@ -525,9 +580,14 @@ impl IndexScheduler {
             1
         };
 
+        let mut stop_reason = BatchStopReason::default();
         let mut enqueued = Vec::new();
         let mut total_size: u64 = 0;
-        for task_id in index_tasks.into_iter().take(tasks_limit) {
+        for task_id in index_tasks.into_iter() {
+            if enqueued.len() >= tasks_limit {
+                stop_reason = BatchStopReason::ReachedTaskLimit { task_limit: tasks_limit };
+                break;
+            }
             let task = self
                 .queue
                 .tasks
@@ -535,20 +595,35 @@ impl IndexScheduler {
                 .and_then(|task| task.ok_or(Error::CorruptedTaskQueue))?;
 
             if let Some(uuid) = task.content_uuid() {
-                let content_size = self.queue.file_store.compute_size(uuid)?;
+                let content_size = match self.queue.file_store.compute_size(uuid) {
+                    Ok(content_size) => content_size,
+                    Err(file_store::Error::IoError(err)) if err.kind() == ErrorKind::NotFound => 0,
+                    Err(otherwise) => return Err(otherwise.into()),
+                };
                 total_size = total_size.saturating_add(content_size);
             }
 
-            if total_size > self.scheduler.batched_tasks_size_limit && !enqueued.is_empty() {
+            let size_limit = self.scheduler.batched_tasks_size_limit;
+            if total_size > size_limit && !enqueued.is_empty() {
+                stop_reason = BatchStopReason::ReachedSizeLimit { size_limit, size: total_size };
                 break;
             }
 
             enqueued.push((task.uid, task.kind));
         }
 
-        if let Some((batchkind, create_index)) =
+        stop_reason.replace_unspecified({
+            if enqueued.len() == count_total_enqueued as usize {
+                BatchStopReason::ExhaustedEnqueuedTasks
+            } else {
+                BatchStopReason::ExhaustedEnqueuedTasksForIndex { index: index_name.to_owned() }
+            }
+        });
+
+        if let Some((batchkind, create_index, autobatch_stop_reason)) =
             autobatcher::autobatch(enqueued, index_already_exists, primary_key.as_deref())
         {
+            current_batch.reason(autobatch_stop_reason.unwrap_or(stop_reason));
             return Ok(self
                 .create_next_batch_index(
                     rtxn,

crates/index-scheduler/src/scheduler/mod.rs

@@ -4,6 +4,7 @@ mod autobatcher_test;
 mod create_batch;
 mod process_batch;
 mod process_dump_creation;
+mod process_export;
 mod process_index_operation;
 mod process_snapshot_creation;
 mod process_upgrade;
@@ -83,6 +84,9 @@ pub struct Scheduler {
     ///
     /// 0 disables the cache.
     pub(crate) embedding_cache_cap: usize,
+
+    /// Snapshot compaction status.
+    pub(crate) experimental_no_snapshot_compaction: bool,
 }
 
 impl Scheduler {
@@ -98,6 +102,7 @@ impl Scheduler {
             auth_env: self.auth_env.clone(),
             version_file_path: self.version_file_path.clone(),
             embedding_cache_cap: self.embedding_cache_cap,
+            experimental_no_snapshot_compaction: self.experimental_no_snapshot_compaction,
         }
     }
 
@@ -114,6 +119,7 @@ impl Scheduler {
             auth_env,
             version_file_path: options.version_file_path.clone(),
             embedding_cache_cap: options.embedding_cache_cap,
+            experimental_no_snapshot_compaction: options.experimental_no_snapshot_compaction,
         }
     }
 }
@@ -370,9 +376,11 @@ impl IndexScheduler {
                 post_commit_dabases_sizes
                     .get(dbname)
                     .map(|post_size| {
-                        use byte_unit::{Byte, UnitType::Binary};
                         use std::cmp::Ordering::{Equal, Greater, Less};
 
+                        use byte_unit::Byte;
+                        use byte_unit::UnitType::Binary;
+
                         let post = Byte::from_u64(*post_size as u64).get_appropriate_unit(Binary);
                         let diff_size = post_size.abs_diff(*pre_size) as u64;
                         let diff = Byte::from_u64(diff_size).get_appropriate_unit(Binary);

crates/index-scheduler/src/scheduler/process_batch.rs

@@ -6,7 +6,8 @@ use meilisearch_types::batches::{BatchEnqueuedAt, BatchId};
 use meilisearch_types::heed::{RoTxn, RwTxn};
 use meilisearch_types::milli::progress::{Progress, VariableNameStep};
 use meilisearch_types::milli::{self, ChannelCongestion};
-use meilisearch_types::tasks::{Details, IndexSwap, KindWithContent, Status, Task};
+use meilisearch_types::tasks::{Details, IndexSwap, Kind, KindWithContent, Status, Task};
+use meilisearch_types::versioning::{VERSION_MAJOR, VERSION_MINOR, VERSION_PATCH};
 use milli::update::Settings as MilliSettings;
 use roaring::RoaringBitmap;
 
@@ -144,14 +145,30 @@ impl IndexScheduler {
                     self.index_mapper.index(&rtxn, &index_uid)?
                 };
 
+                let mut index_wtxn = index.write_txn()?;
+
+                let index_version = index.get_version(&index_wtxn)?.unwrap_or((1, 12, 0));
+                let package_version = (VERSION_MAJOR, VERSION_MINOR, VERSION_PATCH);
+                if index_version != package_version {
+                    return Err(Error::IndexVersionMismatch {
+                        index: index_uid,
+                        index_version,
+                        package_version,
+                    });
+                }
+
                 // the index operation can take a long time, so save this handle to make it available to the search for the duration of the tick
                 self.index_mapper
                     .set_currently_updating_index(Some((index_uid.clone(), index.clone())));
 
-                let mut index_wtxn = index.write_txn()?;
                 let pre_commit_dabases_sizes = index.database_sizes(&index_wtxn)?;
-                let (tasks, congestion) =
-                    self.apply_index_operation(&mut index_wtxn, &index, op, &progress)?;
+                let (tasks, congestion) = self.apply_index_operation(
+                    &mut index_wtxn,
+                    &index,
+                    op,
+                    &progress,
+                    current_batch.embedder_stats.clone(),
+                )?;
 
                 {
                     progress.update_progress(FinalizingIndexStep::Committing);
@@ -226,10 +243,12 @@ impl IndexScheduler {
                     );
                     builder.set_primary_key(primary_key);
                     let must_stop_processing = self.scheduler.must_stop_processing.clone();
+
                     builder
                         .execute(
-                            |indexing_step| tracing::debug!(update = ?indexing_step),
-                            || must_stop_processing.get(),
+                            &|| must_stop_processing.get(),
+                            &progress,
+                            current_batch.embedder_stats.clone(),
                         )
                         .map_err(|e| Error::from_milli(e, Some(index_uid.to_string())))?;
                     index_wtxn.commit()?;
@@ -349,13 +368,55 @@ impl IndexScheduler {
                 task.status = Status::Succeeded;
                 Ok((vec![task], ProcessBatchInfo::default()))
             }
+            Batch::Export { mut task } => {
+                let KindWithContent::Export { url, api_key, payload_size, indexes } = &task.kind
+                else {
+                    unreachable!()
+                };
+
+                let ret = catch_unwind(AssertUnwindSafe(|| {
+                    self.process_export(
+                        url,
+                        api_key.as_deref(),
+                        payload_size.as_ref(),
+                        indexes,
+                        progress,
+                    )
+                }));
+
+                let stats = match ret {
+                    Ok(Ok(stats)) => stats,
+                    Ok(Err(Error::AbortedTask)) => return Err(Error::AbortedTask),
+                    Ok(Err(e)) => return Err(Error::Export(Box::new(e))),
+                    Err(e) => {
+                        let msg = match e.downcast_ref::<&'static str>() {
+                            Some(s) => *s,
+                            None => match e.downcast_ref::<String>() {
+                                Some(s) => &s[..],
+                                None => "Box<dyn Any>",
+                            },
+                        };
+                        return Err(Error::Export(Box::new(Error::ProcessBatchPanicked(
+                            msg.to_string(),
+                        ))));
+                    }
+                };
+
+                task.status = Status::Succeeded;
+                if let Some(Details::Export { indexes, .. }) = task.details.as_mut() {
+                    *indexes = stats;
+                }
+                Ok((vec![task], ProcessBatchInfo::default()))
+            }
             Batch::UpgradeDatabase { mut tasks } => {
                 let KindWithContent::UpgradeDatabase { from } = tasks.last().unwrap().kind else {
                     unreachable!();
                 };
+
                 let ret = catch_unwind(AssertUnwindSafe(|| self.process_upgrade(from, progress)));
                 match ret {
                     Ok(Ok(())) => (),
+                    Ok(Err(Error::AbortedTask)) => return Err(Error::AbortedTask),
                     Ok(Err(e)) => return Err(Error::DatabaseUpgrade(Box::new(e))),
                     Err(e) => {
                         let msg = match e.downcast_ref::<&'static str>() {
@@ -653,17 +714,81 @@ impl IndexScheduler {
         progress: &Progress,
     ) -> Result<Vec<Task>> {
         progress.update_progress(TaskCancelationProgress::RetrievingTasks);
+        let mut tasks_to_cancel = RoaringBitmap::new();
 
+        let enqueued_tasks = &self.queue.tasks.get_status(rtxn, Status::Enqueued)?;
+
+        // 0. Check if any upgrade task was matched.
+        //    If so, we cancel all the failed or enqueued upgrade tasks.
+        let upgrade_tasks = &self.queue.tasks.get_kind(rtxn, Kind::UpgradeDatabase)?;
+        let is_canceling_upgrade = !matched_tasks.is_disjoint(upgrade_tasks);
+        if is_canceling_upgrade {
+            let failed_tasks = self.queue.tasks.get_status(rtxn, Status::Failed)?;
+            tasks_to_cancel |= upgrade_tasks & (enqueued_tasks | failed_tasks);
+        }
         // 1. Remove from this list the tasks that we are not allowed to cancel
         //    Notice that only the _enqueued_ ones are cancelable and we should
         //    have already aborted the indexation of the _processing_ ones
-        let cancelable_tasks = self.queue.tasks.get_status(rtxn, Status::Enqueued)?;
-        let tasks_to_cancel = cancelable_tasks & matched_tasks;
+        tasks_to_cancel |= enqueued_tasks & matched_tasks;
 
+        // 2. If we're canceling an upgrade, attempt the rollback
+        if let Some(latest_upgrade_task) = (&tasks_to_cancel & upgrade_tasks).max() {
+            progress.update_progress(TaskCancelationProgress::CancelingUpgrade);
+
+            let task = self.queue.tasks.get_task(rtxn, latest_upgrade_task)?.unwrap();
+            let Some(Details::UpgradeDatabase { from, to }) = task.details else {
+                unreachable!("wrong details for upgrade task {latest_upgrade_task}")
+            };
+
+            // check that we are rollbacking an upgrade to the current Meilisearch
+            let bin_major: u32 = meilisearch_types::versioning::VERSION_MAJOR;
+            let bin_minor: u32 = meilisearch_types::versioning::VERSION_MINOR;
+            let bin_patch: u32 = meilisearch_types::versioning::VERSION_PATCH;
+
+            if to == (bin_major, bin_minor, bin_patch) {
+                tracing::warn!(
+                    "Rollbacking from v{}.{}.{} to v{}.{}.{}",
+                    to.0,
+                    to.1,
+                    to.2,
+                    from.0,
+                    from.1,
+                    from.2
+                );
+                let ret = catch_unwind(std::panic::AssertUnwindSafe(|| {
+                    self.process_rollback(from, progress)
+                }));
+
+                match ret {
+                    Ok(Ok(())) => {}
+                    Ok(Err(err)) => return Err(Error::DatabaseUpgrade(Box::new(err))),
+                    Err(e) => {
+                        let msg = match e.downcast_ref::<&'static str>() {
+                            Some(s) => *s,
+                            None => match e.downcast_ref::<String>() {
+                                Some(s) => &s[..],
+                                None => "Box<dyn Any>",
+                            },
+                        };
+                        return Err(Error::DatabaseUpgrade(Box::new(Error::ProcessBatchPanicked(
+                            msg.to_string(),
+                        ))));
+                    }
+                }
+            } else {
+                tracing::debug!(
+                    "Not rollbacking an upgrade targetting the earlier version v{}.{}.{}",
+                    bin_major,
+                    bin_minor,
+                    bin_patch
+                )
+            }
+        }
+
+        // 3. We now have a list of tasks to cancel, cancel them
         let (task_progress, progress_obj) = AtomicTaskStep::new(tasks_to_cancel.len() as u32);
         progress.update_progress(progress_obj);
 
-        // 2. We now have a list of tasks to cancel, cancel them
         let mut tasks = self.queue.tasks.get_existing_tasks(
             rtxn,
             tasks_to_cancel.iter().inspect(|_| {

crates/index-scheduler/src/scheduler/process_dump_creation.rs

@@ -5,6 +5,7 @@ use std::sync::atomic::Ordering;
 
 use dump::IndexMetadata;
 use meilisearch_types::milli::constants::RESERVED_VECTORS_FIELD_NAME;
+use meilisearch_types::milli::index::EmbeddingsWithMetadata;
 use meilisearch_types::milli::progress::{Progress, VariableNameStep};
 use meilisearch_types::milli::vector::parsed_vectors::{ExplicitVectors, VectorOrArrayOfVectors};
 use meilisearch_types::milli::{self};
@@ -43,7 +44,16 @@ impl IndexScheduler {
 
         let rtxn = self.env.read_txn()?;
 
-        // 2. dump the tasks
+        // 2. dump the chat completion settings
+        // TODO should I skip the export if the chat completion has been disabled?
+        progress.update_progress(DumpCreationProgress::DumpTheChatCompletionSettings);
+        let mut dump_chat_completion_settings = dump.create_chat_completions_settings()?;
+        for result in self.chat_settings.iter(&rtxn)? {
+            let (name, chat_settings) = result?;
+            dump_chat_completion_settings.push_settings(name, &chat_settings)?;
+        }
+
+        // 3. dump the tasks
         progress.update_progress(DumpCreationProgress::DumpTheTasks);
         let mut dump_tasks = dump.create_tasks_queue()?;
 
@@ -81,7 +91,7 @@ impl IndexScheduler {
 
             let mut dump_content_file = dump_tasks.push_task(&t.into())?;
 
-            // 2.1. Dump the `content_file` associated with the task if there is one and the task is not finished yet.
+            // 3.1. Dump the `content_file` associated with the task if there is one and the task is not finished yet.
             if let Some(content_file) = content_file {
                 if self.scheduler.must_stop_processing.get() {
                     return Err(Error::AbortedTask);
@@ -105,7 +115,7 @@ impl IndexScheduler {
         }
         dump_tasks.flush()?;
 
-        // 3. dump the batches
+        // 4. dump the batches
         progress.update_progress(DumpCreationProgress::DumpTheBatches);
         let mut dump_batches = dump.create_batches_queue()?;
 
@@ -138,7 +148,7 @@ impl IndexScheduler {
         }
         dump_batches.flush()?;
 
-        // 4. Dump the indexes
+        // 5. Dump the indexes
         progress.update_progress(DumpCreationProgress::DumpTheIndexes);
         let nb_indexes = self.index_mapper.index_mapping.len(&rtxn)? as u32;
         let mut count = 0;
@@ -165,9 +175,6 @@ impl IndexScheduler {
 
             let fields_ids_map = index.fields_ids_map(&rtxn)?;
             let all_fields: Vec<_> = fields_ids_map.iter().map(|(id, _)| id).collect();
-            let embedding_configs = index
-                .embedding_configs(&rtxn)
-                .map_err(|e| Error::from_milli(e, Some(uid.to_string())))?;
 
             let nb_documents = index
                 .number_of_documents(&rtxn)
@@ -178,7 +185,7 @@ impl IndexScheduler {
             let documents = index
                 .all_documents(&rtxn)
                 .map_err(|e| Error::from_milli(e, Some(uid.to_string())))?;
-            // 4.1. Dump the documents
+            // 5.1. Dump the documents
             for ret in documents {
                 if self.scheduler.must_stop_processing.get() {
                     return Err(Error::AbortedTask);
@@ -221,16 +228,21 @@ impl IndexScheduler {
                         return Err(Error::from_milli(user_err, Some(uid.to_string())));
                     };
 
-                    for (embedder_name, embeddings) in embeddings {
-                        let user_provided = embedding_configs
-                            .iter()
-                            .find(|conf| conf.name == embedder_name)
-                            .is_some_and(|conf| conf.user_provided.contains(id));
+                    for (
+                        embedder_name,
+                        EmbeddingsWithMetadata { embeddings, regenerate, has_fragments },
+                    ) in embeddings
+                    {
                         let embeddings = ExplicitVectors {
                             embeddings: Some(VectorOrArrayOfVectors::from_array_of_vectors(
                                 embeddings,
                             )),
-                            regenerate: !user_provided,
+                            regenerate: regenerate &&
+                            // Meilisearch does not handle well dumps with fragments, because as the fragments
+                            // are marked as user-provided,
+                            // all embeddings would be regenerated on any settings change or document update.
+                            // To prevent this, we mark embeddings has non regenerate in this case.
+                            !has_fragments,
                         };
                         vectors.insert(embedder_name, serde_json::to_value(embeddings).unwrap());
                     }
@@ -240,7 +252,7 @@ impl IndexScheduler {
                 atomic.fetch_add(1, Ordering::Relaxed);
             }
 
-            // 4.2. Dump the settings
+            // 5.2. Dump the settings
             let settings = meilisearch_types::settings::settings(
                 index,
                 &rtxn,
@@ -251,7 +263,7 @@ impl IndexScheduler {
             Ok(())
         })?;
 
-        // 5. Dump experimental feature settings
+        // 6. Dump experimental feature settings
         progress.update_progress(DumpCreationProgress::DumpTheExperimentalFeatures);
         let features = self.features().runtime_features();
         dump.create_experimental_features(features)?;

crates/index-scheduler/src/scheduler/process_export.rs

@@ -0,0 +1,377 @@
+use std::collections::BTreeMap;
+use std::io::{self, Write as _};
+use std::sync::atomic;
+use std::time::Duration;
+
+use backoff::ExponentialBackoff;
+use byte_unit::Byte;
+use flate2::write::GzEncoder;
+use flate2::Compression;
+use meilisearch_types::index_uid_pattern::IndexUidPattern;
+use meilisearch_types::milli::constants::RESERVED_VECTORS_FIELD_NAME;
+use meilisearch_types::milli::index::EmbeddingsWithMetadata;
+use meilisearch_types::milli::progress::{Progress, VariableNameStep};
+use meilisearch_types::milli::update::{request_threads, Setting};
+use meilisearch_types::milli::vector::parsed_vectors::{ExplicitVectors, VectorOrArrayOfVectors};
+use meilisearch_types::milli::{self, obkv_to_json, Filter, InternalError};
+use meilisearch_types::settings::{self, SecretPolicy};
+use meilisearch_types::tasks::{DetailsExportIndexSettings, ExportIndexSettings};
+use serde::Deserialize;
+use ureq::{json, Response};
+
+use super::MustStopProcessing;
+use crate::processing::AtomicDocumentStep;
+use crate::{Error, IndexScheduler, Result};
+
+impl IndexScheduler {
+    pub(super) fn process_export(
+        &self,
+        base_url: &str,
+        api_key: Option<&str>,
+        payload_size: Option<&Byte>,
+        indexes: &BTreeMap<IndexUidPattern, ExportIndexSettings>,
+        progress: Progress,
+    ) -> Result<BTreeMap<IndexUidPattern, DetailsExportIndexSettings>> {
+        #[cfg(test)]
+        self.maybe_fail(crate::test_utils::FailureLocation::ProcessExport)?;
+
+        let indexes: Vec<_> = self
+            .index_names()?
+            .into_iter()
+            .flat_map(|uid| {
+                indexes
+                    .iter()
+                    .find(|(pattern, _)| pattern.matches_str(&uid))
+                    .map(|(pattern, settings)| (pattern, uid, settings))
+            })
+            .collect();
+
+        let mut output = BTreeMap::new();
+        let agent = ureq::AgentBuilder::new().timeout(Duration::from_secs(5)).build();
+        let must_stop_processing = self.scheduler.must_stop_processing.clone();
+        for (i, (_pattern, uid, export_settings)) in indexes.iter().enumerate() {
+            if must_stop_processing.get() {
+                return Err(Error::AbortedTask);
+            }
+
+            progress.update_progress(VariableNameStep::<ExportIndex>::new(
+                format!("Exporting index `{uid}`"),
+                i as u32,
+                indexes.len() as u32,
+            ));
+
+            let ExportIndexSettings { filter, override_settings } = export_settings;
+            let index = self.index(uid)?;
+            let index_rtxn = index.read_txn()?;
+            let bearer = api_key.map(|api_key| format!("Bearer {api_key}"));
+
+            // First, check if the index already exists
+            let url = format!("{base_url}/indexes/{uid}");
+            let response = retry(&must_stop_processing, || {
+                let mut request = agent.get(&url);
+                if let Some(bearer) = &bearer {
+                    request = request.set("Authorization", bearer);
+                }
+
+                request.send_bytes(Default::default()).map_err(into_backoff_error)
+            });
+            let index_exists = match response {
+                Ok(response) => response.status() == 200,
+                Err(Error::FromRemoteWhenExporting { code, .. }) if code == "index_not_found" => {
+                    false
+                }
+                Err(e) => return Err(e),
+            };
+
+            let primary_key = index
+                .primary_key(&index_rtxn)
+                .map_err(|e| Error::from_milli(e.into(), Some(uid.to_string())))?;
+
+            // Create the index
+            if !index_exists {
+                let url = format!("{base_url}/indexes");
+                retry(&must_stop_processing, || {
+                    let mut request = agent.post(&url);
+                    if let Some(bearer) = &bearer {
+                        request = request.set("Authorization", bearer);
+                    }
+                    let index_param = json!({ "uid": uid, "primaryKey": primary_key });
+                    request.send_json(&index_param).map_err(into_backoff_error)
+                })?;
+            }
+
+            // Patch the index primary key
+            if index_exists && *override_settings {
+                let url = format!("{base_url}/indexes/{uid}");
+                retry(&must_stop_processing, || {
+                    let mut request = agent.patch(&url);
+                    if let Some(bearer) = &bearer {
+                        request = request.set("Authorization", bearer);
+                    }
+                    let index_param = json!({ "primaryKey": primary_key });
+                    request.send_json(&index_param).map_err(into_backoff_error)
+                })?;
+            }
+
+            // Send the index settings
+            if !index_exists || *override_settings {
+                let mut settings =
+                    settings::settings(&index, &index_rtxn, SecretPolicy::RevealSecrets)
+                        .map_err(|e| Error::from_milli(e, Some(uid.to_string())))?;
+                // Remove the experimental chat setting if not enabled
+                if self.features().check_chat_completions("exporting chat settings").is_err() {
+                    settings.chat = Setting::NotSet;
+                }
+                // Retry logic for sending settings
+                let url = format!("{base_url}/indexes/{uid}/settings");
+                retry(&must_stop_processing, || {
+                    let mut request = agent.patch(&url);
+                    if let Some(bearer) = bearer.as_ref() {
+                        request = request.set("Authorization", bearer);
+                    }
+                    request.send_json(settings.clone()).map_err(into_backoff_error)
+                })?;
+            }
+
+            let filter = filter
+                .as_ref()
+                .map(Filter::from_json)
+                .transpose()
+                .map_err(|e| Error::from_milli(e, Some(uid.to_string())))?
+                .flatten();
+
+            let filter_universe = filter
+                .map(|f| f.evaluate(&index_rtxn, &index))
+                .transpose()
+                .map_err(|e| Error::from_milli(e, Some(uid.to_string())))?;
+            let whole_universe = index
+                .documents_ids(&index_rtxn)
+                .map_err(|e| Error::from_milli(e.into(), Some(uid.to_string())))?;
+            let universe = filter_universe.unwrap_or(whole_universe);
+
+            let fields_ids_map = index.fields_ids_map(&index_rtxn)?;
+            let all_fields: Vec<_> = fields_ids_map.iter().map(|(id, _)| id).collect();
+
+            // We don't need to keep this one alive as we will
+            // spawn many threads to process the documents
+            drop(index_rtxn);
+
+            let total_documents = universe.len() as u32;
+            let (step, progress_step) = AtomicDocumentStep::new(total_documents);
+            progress.update_progress(progress_step);
+
+            output.insert(
+                IndexUidPattern::new_unchecked(uid.clone()),
+                DetailsExportIndexSettings {
+                    settings: (*export_settings).clone(),
+                    matched_documents: Some(total_documents as u64),
+                },
+            );
+
+            let limit = payload_size.map(|ps| ps.as_u64() as usize).unwrap_or(20 * 1024 * 1024); // defaults to 20 MiB
+            let documents_url = format!("{base_url}/indexes/{uid}/documents");
+
+            let results = request_threads()
+                .broadcast(|ctx| {
+                    let index_rtxn = index
+                        .read_txn()
+                        .map_err(|e| Error::from_milli(e.into(), Some(uid.to_string())))?;
+
+                    let mut buffer = Vec::new();
+                    let mut tmp_buffer = Vec::new();
+                    let mut compressed_buffer = Vec::new();
+                    for (i, docid) in universe.iter().enumerate() {
+                        if i % ctx.num_threads() != ctx.index() {
+                            continue;
+                        }
+
+                        let document = index
+                            .document(&index_rtxn, docid)
+                            .map_err(|e| Error::from_milli(e, Some(uid.to_string())))?;
+
+                        let mut document = obkv_to_json(&all_fields, &fields_ids_map, document)
+                            .map_err(|e| Error::from_milli(e, Some(uid.to_string())))?;
+
+                        // TODO definitely factorize this code
+                        'inject_vectors: {
+                            let embeddings = index
+                                .embeddings(&index_rtxn, docid)
+                                .map_err(|e| Error::from_milli(e, Some(uid.to_string())))?;
+
+                            if embeddings.is_empty() {
+                                break 'inject_vectors;
+                            }
+
+                            let vectors = document
+                                .entry(RESERVED_VECTORS_FIELD_NAME)
+                                .or_insert(serde_json::Value::Object(Default::default()));
+
+                            let serde_json::Value::Object(vectors) = vectors else {
+                                return Err(Error::from_milli(
+                                    milli::Error::UserError(
+                                        milli::UserError::InvalidVectorsMapType {
+                                            document_id: {
+                                                if let Ok(Some(Ok(index))) = index
+                                                    .external_id_of(
+                                                        &index_rtxn,
+                                                        std::iter::once(docid),
+                                                    )
+                                                    .map(|it| it.into_iter().next())
+                                                {
+                                                    index
+                                                } else {
+                                                    format!("internal docid={docid}")
+                                                }
+                                            },
+                                            value: vectors.clone(),
+                                        },
+                                    ),
+                                    Some(uid.to_string()),
+                                ));
+                            };
+
+                            for (
+                                embedder_name,
+                                EmbeddingsWithMetadata { embeddings, regenerate, has_fragments },
+                            ) in embeddings
+                            {
+                                let embeddings = ExplicitVectors {
+                                    embeddings: Some(
+                                        VectorOrArrayOfVectors::from_array_of_vectors(embeddings),
+                                    ),
+                                    regenerate: regenerate &&
+                                    // Meilisearch does not handle well dumps with fragments, because as the fragments
+                                    // are marked as user-provided,
+                                    // all embeddings would be regenerated on any settings change or document update.
+                                    // To prevent this, we mark embeddings has non regenerate in this case.
+                                    !has_fragments,
+                                };
+                                vectors.insert(
+                                    embedder_name,
+                                    serde_json::to_value(embeddings).unwrap(),
+                                );
+                            }
+                        }
+
+                        tmp_buffer.clear();
+                        serde_json::to_writer(&mut tmp_buffer, &document)
+                            .map_err(milli::InternalError::from)
+                            .map_err(|e| Error::from_milli(e.into(), Some(uid.to_string())))?;
+
+                        // Make sure we put at least one document in the buffer even
+                        // though we might go above the buffer limit before sending
+                        if !buffer.is_empty() && buffer.len() + tmp_buffer.len() > limit {
+                            // We compress the documents before sending them
+                            let mut encoder =
+                                GzEncoder::new(&mut compressed_buffer, Compression::default());
+                            encoder
+                                .write_all(&buffer)
+                                .map_err(|e| Error::from_milli(e.into(), Some(uid.clone())))?;
+                            encoder
+                                .finish()
+                                .map_err(|e| Error::from_milli(e.into(), Some(uid.clone())))?;
+
+                            retry(&must_stop_processing, || {
+                                let mut request = agent.post(&documents_url);
+                                request = request.set("Content-Type", "application/x-ndjson");
+                                request = request.set("Content-Encoding", "gzip");
+                                if let Some(bearer) = &bearer {
+                                    request = request.set("Authorization", bearer);
+                                }
+                                request.send_bytes(&compressed_buffer).map_err(into_backoff_error)
+                            })?;
+                            buffer.clear();
+                            compressed_buffer.clear();
+                        }
+                        buffer.extend_from_slice(&tmp_buffer);
+
+                        if i > 0 && i % 100 == 0 {
+                            step.fetch_add(100, atomic::Ordering::Relaxed);
+                        }
+                    }
+
+                    retry(&must_stop_processing, || {
+                        let mut request = agent.post(&documents_url);
+                        request = request.set("Content-Type", "application/x-ndjson");
+                        if let Some(bearer) = &bearer {
+                            request = request.set("Authorization", bearer);
+                        }
+                        request.send_bytes(&buffer).map_err(into_backoff_error)
+                    })?;
+
+                    Ok(())
+                })
+                .map_err(|e| {
+                    Error::from_milli(
+                        milli::Error::InternalError(InternalError::PanicInThreadPool(e)),
+                        Some(uid.to_string()),
+                    )
+                })?;
+            for result in results {
+                result?;
+            }
+
+            step.store(total_documents, atomic::Ordering::Relaxed);
+        }
+
+        Ok(output)
+    }
+}
+
+fn retry<F>(must_stop_processing: &MustStopProcessing, send_request: F) -> Result<ureq::Response>
+where
+    F: Fn() -> Result<ureq::Response, backoff::Error<ureq::Error>>,
+{
+    match backoff::retry(ExponentialBackoff::default(), || {
+        if must_stop_processing.get() {
+            return Err(backoff::Error::Permanent(ureq::Error::Status(
+                u16::MAX,
+                // 444: Connection Closed Without Response
+                Response::new(444, "Abort", "Aborted task").unwrap(),
+            )));
+        }
+        send_request()
+    }) {
+        Ok(response) => Ok(response),
+        Err(backoff::Error::Permanent(e)) => Err(ureq_error_into_error(e)),
+        Err(backoff::Error::Transient { err, retry_after: _ }) => Err(ureq_error_into_error(err)),
+    }
+}
+
+fn into_backoff_error(err: ureq::Error) -> backoff::Error<ureq::Error> {
+    match err {
+        // Those code status must trigger an automatic retry
+        // <https://www.restapitutorial.com/advanced/responses/retries>
+        ureq::Error::Status(408 | 429 | 500 | 502 | 503 | 504, _) => {
+            backoff::Error::Transient { err, retry_after: None }
+        }
+        ureq::Error::Status(_, _) => backoff::Error::Permanent(err),
+        ureq::Error::Transport(_) => backoff::Error::Transient { err, retry_after: None },
+    }
+}
+
+/// Converts a `ureq::Error` into an `Error`.
+fn ureq_error_into_error(error: ureq::Error) -> Error {
+    #[derive(Deserialize)]
+    struct MeiliError {
+        message: String,
+        code: String,
+        r#type: String,
+        link: String,
+    }
+
+    match error {
+        // This is a workaround to handle task abortion - the error propagation path
+        // makes it difficult to cleanly surface the abortion at this level.
+        ureq::Error::Status(u16::MAX, _) => Error::AbortedTask,
+        ureq::Error::Status(_, response) => match response.into_json() {
+            Ok(MeiliError { message, code, r#type, link }) => {
+                Error::FromRemoteWhenExporting { message, code, r#type, link }
+            }
+            Err(e) => e.into(),
+        },
+        ureq::Error::Transport(transport) => io::Error::new(io::ErrorKind::Other, transport).into(),
+    }
+}
+
+enum ExportIndex {}

crates/index-scheduler/src/scheduler/process_index_operation.rs

@@ -1,11 +1,13 @@
+use std::sync::Arc;
+
 use bumpalo::collections::CollectIn;
 use bumpalo::Bump;
 use meilisearch_types::heed::RwTxn;
 use meilisearch_types::milli::documents::PrimaryKey;
-use meilisearch_types::milli::progress::Progress;
+use meilisearch_types::milli::progress::{EmbedderStats, Progress};
 use meilisearch_types::milli::update::new::indexer::{self, UpdateByFunction};
 use meilisearch_types::milli::update::DocumentAdditionResult;
-use meilisearch_types::milli::{self, ChannelCongestion, Filter, ThreadPoolNoAbortBuilder};
+use meilisearch_types::milli::{self, ChannelCongestion, Filter};
 use meilisearch_types::settings::apply_settings_to_builder;
 use meilisearch_types::tasks::{Details, KindWithContent, Status, Task};
 use meilisearch_types::Index;
@@ -24,7 +26,7 @@ impl IndexScheduler {
     /// The list of processed tasks.
     #[tracing::instrument(
         level = "trace",
-        skip(self, index_wtxn, index, progress),
+        skip(self, index_wtxn, index, progress, embedder_stats),
         target = "indexing::scheduler"
     )]
     pub(crate) fn apply_index_operation<'i>(
@@ -33,6 +35,7 @@ impl IndexScheduler {
         index: &'i Index,
         operation: IndexOperation,
         progress: &Progress,
+        embedder_stats: Arc<EmbedderStats>,
     ) -> Result<(Vec<Task>, Option<ChannelCongestion>)> {
         let indexer_alloc = Bump::new();
         let started_processing_at = std::time::Instant::now();
@@ -86,8 +89,9 @@ impl IndexScheduler {
                 let mut content_files_iter = content_files.iter();
                 let mut indexer = indexer::DocumentOperation::new();
                 let embedders = index
+                    .embedding_configs()
                     .embedding_configs(index_wtxn)
-                    .map_err(|e| Error::from_milli(e, Some(index_uid.clone())))?;
+                    .map_err(|e| Error::from_milli(e.into(), Some(index_uid.clone())))?;
                 let embedders = self.embedders(index_uid.clone(), embedders)?;
                 for operation in operations {
                     match operation {
@@ -113,18 +117,8 @@ impl IndexScheduler {
                     }
                 }
 
-                let local_pool;
                 let indexer_config = self.index_mapper.indexer_config();
-                let pool = match &indexer_config.thread_pool {
-                    Some(pool) => pool,
-                    None => {
-                        local_pool = ThreadPoolNoAbortBuilder::new()
-                            .thread_name(|i| format!("indexing-thread-{i}"))
-                            .build()
-                            .unwrap();
-                        &local_pool
-                    }
-                };
+                let pool = &indexer_config.thread_pool;
 
                 progress.update_progress(DocumentOperationProgress::ComputingDocumentChanges);
                 let (document_changes, operation_stats, primary_key) = indexer
@@ -187,6 +181,7 @@ impl IndexScheduler {
                             embedders,
                             &|| must_stop_processing.get(),
                             progress,
+                            &embedder_stats,
                         )
                         .map_err(|e| Error::from_milli(e, Some(index_uid.clone())))?,
                     );
@@ -266,18 +261,8 @@ impl IndexScheduler {
 
                 let mut congestion = None;
                 if task.error.is_none() {
-                    let local_pool;
                     let indexer_config = self.index_mapper.indexer_config();
-                    let pool = match &indexer_config.thread_pool {
-                        Some(pool) => pool,
-                        None => {
-                            local_pool = ThreadPoolNoAbortBuilder::new()
-                                .thread_name(|i| format!("indexing-thread-{i}"))
-                                .build()
-                                .unwrap();
-                            &local_pool
-                        }
-                    };
+                    let pool = &indexer_config.thread_pool;
 
                     let candidates_count = candidates.len();
                     progress.update_progress(DocumentEditionProgress::ComputingDocumentChanges);
@@ -290,8 +275,9 @@ impl IndexScheduler {
                         })
                         .unwrap()?;
                     let embedders = index
+                        .embedding_configs()
                         .embedding_configs(index_wtxn)
-                        .map_err(|err| Error::from_milli(err, Some(index_uid.clone())))?;
+                        .map_err(|err| Error::from_milli(err.into(), Some(index_uid.clone())))?;
                     let embedders = self.embedders(index_uid.clone(), embedders)?;
 
                     progress.update_progress(DocumentEditionProgress::Indexing);
@@ -308,6 +294,7 @@ impl IndexScheduler {
                             embedders,
                             &|| must_stop_processing.get(),
                             progress,
+                            &embedder_stats,
                         )
                         .map_err(|err| Error::from_milli(err, Some(index_uid.clone())))?,
                     );
@@ -429,18 +416,8 @@ impl IndexScheduler {
 
                 let mut congestion = None;
                 if !tasks.iter().all(|res| res.error.is_some()) {
-                    let local_pool;
                     let indexer_config = self.index_mapper.indexer_config();
-                    let pool = match &indexer_config.thread_pool {
-                        Some(pool) => pool,
-                        None => {
-                            local_pool = ThreadPoolNoAbortBuilder::new()
-                                .thread_name(|i| format!("indexing-thread-{i}"))
-                                .build()
-                                .unwrap();
-                            &local_pool
-                        }
-                    };
+                    let pool = &indexer_config.thread_pool;
 
                     progress.update_progress(DocumentDeletionProgress::DeleteDocuments);
                     let mut indexer = indexer::DocumentDeletion::new();
@@ -448,8 +425,9 @@ impl IndexScheduler {
                     indexer.delete_documents_by_docids(to_delete);
                     let document_changes = indexer.into_changes(&indexer_alloc, primary_key);
                     let embedders = index
+                        .embedding_configs()
                         .embedding_configs(index_wtxn)
-                        .map_err(|err| Error::from_milli(err, Some(index_uid.clone())))?;
+                        .map_err(|err| Error::from_milli(err.into(), Some(index_uid.clone())))?;
                     let embedders = self.embedders(index_uid.clone(), embedders)?;
 
                     progress.update_progress(DocumentDeletionProgress::Indexing);
@@ -466,6 +444,7 @@ impl IndexScheduler {
                             embedders,
                             &|| must_stop_processing.get(),
                             progress,
+                            &embedder_stats,
                         )
                         .map_err(|err| Error::from_milli(err, Some(index_uid.clone())))?,
                     );
@@ -498,14 +477,11 @@ impl IndexScheduler {
                 }
 
                 progress.update_progress(SettingsProgress::ApplyTheSettings);
-                builder
-                    .execute(
-                        |indexing_step| tracing::debug!(update = ?indexing_step),
-                        || must_stop_processing.get(),
-                    )
+                let congestion = builder
+                    .execute(&|| must_stop_processing.get(), progress, embedder_stats)
                     .map_err(|err| Error::from_milli(err, Some(index_uid.clone())))?;
 
-                Ok((tasks, None))
+                Ok((tasks, congestion))
             }
             IndexOperation::DocumentClearAndSetting {
                 index_uid,
@@ -521,6 +497,7 @@ impl IndexScheduler {
                         tasks: cleared_tasks,
                     },
                     progress,
+                    embedder_stats.clone(),
                 )?;
 
                 let (settings_tasks, _congestion) = self.apply_index_operation(
@@ -528,6 +505,7 @@ impl IndexScheduler {
                     index,
                     IndexOperation::Settings { index_uid, settings, tasks: settings_tasks },
                     progress,
+                    embedder_stats,
                 )?;
 
                 let mut tasks = settings_tasks;

crates/index-scheduler/src/scheduler/process_snapshot_creation.rs

@@ -7,9 +7,73 @@ use meilisearch_types::milli::progress::{Progress, VariableNameStep};
 use meilisearch_types::tasks::{Status, Task};
 use meilisearch_types::{compression, VERSION_FILE_NAME};
 
+use crate::heed::EnvOpenOptions;
 use crate::processing::{AtomicUpdateFileStep, SnapshotCreationProgress};
+use crate::queue::TaskQueue;
 use crate::{Error, IndexScheduler, Result};
 
+/// # Safety
+///
+/// See [`EnvOpenOptions::open`].
+unsafe fn remove_tasks(
+    tasks: &[Task],
+    dst: &std::path::Path,
+    index_base_map_size: usize,
+) -> Result<()> {
+    let env_options = EnvOpenOptions::new();
+    let mut env_options = env_options.read_txn_without_tls();
+    let env = env_options.max_dbs(TaskQueue::nb_db()).map_size(index_base_map_size).open(dst)?;
+    let mut wtxn = env.write_txn()?;
+    let task_queue = TaskQueue::new(&env, &mut wtxn)?;
+
+    // Destructuring to ensure the code below gets updated if a database gets added in the future.
+    let TaskQueue {
+        all_tasks,
+        status,
+        kind,
+        index_tasks: _, // snapshot creation tasks are not index tasks
+        canceled_by,
+        enqueued_at,
+        started_at,
+        finished_at,
+    } = task_queue;
+
+    for task in tasks {
+        all_tasks.delete(&mut wtxn, &task.uid)?;
+
+        let mut tasks = status.get(&wtxn, &task.status)?.unwrap_or_default();
+        tasks.remove(task.uid);
+        status.put(&mut wtxn, &task.status, &tasks)?;
+
+        let mut tasks = kind.get(&wtxn, &task.kind.as_kind())?.unwrap_or_default();
+        tasks.remove(task.uid);
+        kind.put(&mut wtxn, &task.kind.as_kind(), &tasks)?;
+
+        canceled_by.delete(&mut wtxn, &task.uid)?;
+
+        let timestamp = task.enqueued_at.unix_timestamp_nanos();
+        let mut tasks = enqueued_at.get(&wtxn, &timestamp)?.unwrap_or_default();
+        tasks.remove(task.uid);
+        enqueued_at.put(&mut wtxn, &timestamp, &tasks)?;
+
+        if let Some(task_started_at) = task.started_at {
+            let timestamp = task_started_at.unix_timestamp_nanos();
+            let mut tasks = started_at.get(&wtxn, &timestamp)?.unwrap_or_default();
+            tasks.remove(task.uid);
+            started_at.put(&mut wtxn, &timestamp, &tasks)?;
+        }
+
+        if let Some(task_finished_at) = task.finished_at {
+            let timestamp = task_finished_at.unix_timestamp_nanos();
+            let mut tasks = finished_at.get(&wtxn, &timestamp)?.unwrap_or_default();
+            tasks.remove(task.uid);
+            finished_at.put(&mut wtxn, &timestamp, &tasks)?;
+        }
+    }
+    wtxn.commit()?;
+    Ok(())
+}
+
 impl IndexScheduler {
     pub(super) fn process_snapshot(
         &self,
@@ -41,16 +105,33 @@ impl IndexScheduler {
         progress.update_progress(SnapshotCreationProgress::SnapshotTheIndexScheduler);
         let dst = temp_snapshot_dir.path().join("tasks");
         fs::create_dir_all(&dst)?;
-        self.env.copy_to_path(dst.join("data.mdb"), CompactionOption::Enabled)?;
+        let compaction_option = if self.scheduler.experimental_no_snapshot_compaction {
+            CompactionOption::Disabled
+        } else {
+            CompactionOption::Enabled
+        };
+        self.env.copy_to_path(dst.join("data.mdb"), compaction_option)?;
 
-        // 2.2 Create a read transaction on the index-scheduler
+        // 2.2 Remove the current snapshot tasks
+        //
+        // This is done to ensure that the tasks are not processed again when the snapshot is imported
+        //
+        // # Safety
+        //
+        // This is safe because we open the env file we just created in a temporary directory.
+        // We are sure it's not being used by any other process nor thread.
+        unsafe {
+            remove_tasks(&tasks, &dst, self.index_mapper.index_base_map_size)?;
+        }
+
+        // 2.3 Create a read transaction on the index-scheduler
         let rtxn = self.env.read_txn()?;
 
-        // 2.3 Create the update files directory
+        // 2.4 Create the update files directory
         let update_files_dir = temp_snapshot_dir.path().join("update_files");
         fs::create_dir_all(&update_files_dir)?;
 
-        // 2.4 Only copy the update files of the enqueued tasks
+        // 2.5 Only copy the update files of the enqueued tasks
         progress.update_progress(SnapshotCreationProgress::SnapshotTheUpdateFiles);
         let enqueued = self.queue.tasks.get_status(&rtxn, Status::Enqueued)?;
         let (atomic, update_file_progress) = AtomicUpdateFileStep::new(enqueued.len() as u32);
@@ -80,7 +161,7 @@ impl IndexScheduler {
             let dst = temp_snapshot_dir.path().join("indexes").join(uuid.to_string());
             fs::create_dir_all(&dst)?;
             index
-                .copy_to_path(dst.join("data.mdb"), CompactionOption::Enabled)
+                .copy_to_path(dst.join("data.mdb"), compaction_option)
                 .map_err(|e| Error::from_milli(e, Some(name.to_string())))?;
         }
 
@@ -90,7 +171,7 @@ impl IndexScheduler {
         progress.update_progress(SnapshotCreationProgress::SnapshotTheApiKeys);
         let dst = temp_snapshot_dir.path().join("auth");
         fs::create_dir_all(&dst)?;
-        self.scheduler.auth_env.copy_to_path(dst.join("data.mdb"), CompactionOption::Enabled)?;
+        self.scheduler.auth_env.copy_to_path(dst.join("data.mdb"), compaction_option)?;
 
         // 5. Copy and tarball the flat snapshot
         progress.update_progress(SnapshotCreationProgress::CreateTheTarball);