Simplify facet update after removing Index::faceted_documents_ids

milli/src/index.rs

@@ -1,7 +1,6 @@
 use std::borrow::Cow;
 use std::collections::{BTreeMap, BTreeSet, HashMap, HashSet};
 use std::fs::File;
-use std::mem::size_of;
 use std::path::Path;
 
 use charabia::{Language, Script};
@@ -14,7 +13,6 @@ use time::OffsetDateTime;
 
 use crate::distance::NDotProductPoint;
 use crate::error::{InternalError, UserError};
-use crate::facet::FacetType;
 use crate::fields_ids_map::FieldsIdsMap;
 use crate::heed_codec::facet::{
     FacetGroupKeyCodec, FacetGroupValueCodec, FieldDocIdFacetF64Codec, FieldDocIdFacetStringCodec,

milli/src/update/clear_documents.rs

@@ -1,7 +1,6 @@
 use roaring::RoaringBitmap;
 use time::OffsetDateTime;
 
-use crate::facet::FacetType;
 use crate::{ExternalDocumentsIds, FieldDistribution, Index, Result};
 
 pub struct ClearDocuments<'t, 'u, 'i> {
@@ -51,7 +50,6 @@ impl<'t, 'u, 'i> ClearDocuments<'t, 'u, 'i> {
 
         // We retrieve the number of documents ids that we are deleting.
         let number_of_documents = self.index.number_of_documents(self.wtxn)?;
-        let faceted_fields = self.index.faceted_fields_ids(self.wtxn)?;
 
         // We clean some of the main engine datastructures.
         self.index.put_words_fst(self.wtxn, &fst::Set::default())?;

milli/src/update/facet/bulk.rs

@@ -1,8 +1,7 @@
-use std::borrow::Cow;
 use std::fs::File;
 use std::io::BufReader;
 
-use grenad::{CompressionType, Reader};
+use grenad::CompressionType;
 use heed::types::ByteSlice;
 use heed::{BytesEncode, Error, RoTxn, RwTxn};
 use obkv::KvReader;
@@ -82,10 +81,7 @@ impl<'i> FacetsUpdateBulk<'i> {
 
         let inner = FacetsUpdateBulkInner { db, delta_data, group_size, min_level_size };
 
-        inner.update(wtxn, &field_ids, |wtxn, field_id, all_docids| {
-            // TODO: remove the lambda altogether
-            Ok(())
-        })?;
+        inner.update(wtxn, &field_ids)?;
 
         Ok(())
     }
@@ -99,21 +95,14 @@ pub(crate) struct FacetsUpdateBulkInner<R: std::io::Read + std::io::Seek> {
     pub min_level_size: u8,
 }
 impl<R: std::io::Read + std::io::Seek> FacetsUpdateBulkInner<R> {
-    pub fn update(
-        mut self,
-        wtxn: &mut RwTxn,
-        field_ids: &[u16],
-        mut handle_all_docids: impl FnMut(&mut RwTxn, FieldId, RoaringBitmap) -> Result<()>,
-    ) -> Result<()> {
+    pub fn update(mut self, wtxn: &mut RwTxn, field_ids: &[u16]) -> Result<()> {
         self.update_level0(wtxn)?;
         for &field_id in field_ids.iter() {
             self.clear_levels(wtxn, field_id)?;
         }
 
         for &field_id in field_ids.iter() {
-            let (level_readers, all_docids) = self.compute_levels_for_field_id(field_id, wtxn)?;
-
-            handle_all_docids(wtxn, field_id, all_docids)?;
+            let level_readers = self.compute_levels_for_field_id(field_id, wtxn)?;
 
             for level_reader in level_readers {
                 let mut cursor = level_reader.into_cursor()?;
@@ -201,16 +190,10 @@ impl<R: std::io::Read + std::io::Seek> FacetsUpdateBulkInner<R> {
         &self,
         field_id: FieldId,
         txn: &RoTxn,
-    ) -> Result<(Vec<grenad::Reader<BufReader<File>>>, RoaringBitmap)> {
-        let mut all_docids = RoaringBitmap::new();
-        let subwriters = self.compute_higher_levels(txn, field_id, 32, &mut |bitmaps, _| {
-            for bitmap in bitmaps {
-                all_docids |= bitmap;
-            }
-            Ok(())
-        })?;
+    ) -> Result<Vec<grenad::Reader<BufReader<File>>>> {
+        let subwriters = self.compute_higher_levels(txn, field_id, 32, &mut |_, _| Ok(()))?;
 
-        Ok((subwriters, all_docids))
+        Ok(subwriters)
     }
     #[allow(clippy::type_complexity)]
     fn read_level_0<'t>(

milli/src/update/facet/incremental.rs

@@ -1,4 +1,3 @@
-use std::collections::HashMap;
 use std::fs::File;
 use std::io::BufReader;
 
@@ -15,7 +14,7 @@ use crate::heed_codec::ByteSliceRefCodec;
 use crate::search::facet::get_highest_level;
 use crate::update::del_add::DelAdd;
 use crate::update::index_documents::valid_lmdb_key;
-use crate::{CboRoaringBitmapCodec, FieldId, Index, Result};
+use crate::{CboRoaringBitmapCodec, Index, Result};
 
 enum InsertionResult {
     InPlace,
@@ -30,16 +29,14 @@ enum DeletionResult {
 
 /// Algorithm to incrementally insert and delete elememts into the
 /// `facet_id_(string/f64)_docids` databases.
-pub struct FacetsUpdateIncremental<'i> {
-    index: &'i Index,
+pub struct FacetsUpdateIncremental {
     inner: FacetsUpdateIncrementalInner,
-    facet_type: FacetType,
     delta_data: grenad::Reader<BufReader<File>>,
 }
 
-impl<'i> FacetsUpdateIncremental<'i> {
+impl FacetsUpdateIncremental {
     pub fn new(
-        index: &'i Index,
+        index: &Index,
         facet_type: FacetType,
         delta_data: grenad::Reader<BufReader<File>>,
         group_size: u8,
@@ -47,7 +44,6 @@ impl<'i> FacetsUpdateIncremental<'i> {
         max_group_size: u8,
     ) -> Self {
         FacetsUpdateIncremental {
-            index,
             inner: FacetsUpdateIncrementalInner {
                 db: match facet_type {
                     FacetType::String => index
@@ -61,12 +57,11 @@ impl<'i> FacetsUpdateIncremental<'i> {
                 max_group_size,
                 min_level_size,
             },
-            facet_type,
             delta_data,
         }
     }
 
-    pub fn execute(self, wtxn: &'i mut RwTxn) -> crate::Result<()> {
+    pub fn execute(self, wtxn: &mut RwTxn) -> crate::Result<()> {
         let mut cursor = self.delta_data.into_cursor()?;
         while let Some((key, value)) = cursor.move_on_next()? {
             if !valid_lmdb_key(key) {

milli/src/update/facet/mod.rs

@@ -115,7 +115,6 @@ pub struct FacetsUpdate<'i> {
     min_level_size: u8,
 }
 impl<'i> FacetsUpdate<'i> {
-    // TODO grenad::Reader<Key, Obkv<DelAdd, RoaringBitmap>>
     pub fn new(
         index: &'i Index,
         facet_type: FacetType,

milli/src/update/index_documents/typed_chunk.rs

@@ -1,4 +1,3 @@
-use std::borrow::Cow;
 use std::collections::HashMap;
 use std::convert::TryInto;
 use std::fs::File;
@@ -11,9 +10,7 @@ use heed::types::ByteSlice;
 use heed::RwTxn;
 use roaring::RoaringBitmap;
 
-use super::helpers::{
-    self, merge_ignore_values, serialize_roaring_bitmap, valid_lmdb_key, CursorClonableMmap,
-};
+use super::helpers::{self, merge_ignore_values, valid_lmdb_key, CursorClonableMmap};
 use super::{ClonableMmap, MergeFn};
 use crate::distance::NDotProductPoint;
 use crate::error::UserError;