From 30110a04885291072b075c807f92e3b77c21da72 Mon Sep 17 00:00:00 2001
From: Kerollmops <clement@meilisearch.com>
Date: Wed, 6 Aug 2025 15:08:48 +0200
Subject: [PATCH] Reintroduce changing the distance from Cosine to Cosine
 binary quantized

---
 crates/milli/src/vector/mod.rs | 18 +++++++++---------
 1 file changed, 9 insertions(+), 9 deletions(-)

diff --git a/crates/milli/src/vector/mod.rs b/crates/milli/src/vector/mod.rs
index 5ff4f658e..3a70d717f 100644
--- a/crates/milli/src/vector/mod.rs
+++ b/crates/milli/src/vector/mod.rs
@@ -166,20 +166,20 @@ impl VectorStore {
                 // only happens once in the life of an embedder, it's not very performances
                 // sensitive.
                 if quantizing && !self.quantized {
-                    // let writer = writer.prepare_changing_distance::<BinaryQuantizedCosine>(wtxn)?;
-                    // writer
-                    //     .builder(rng)
-                    //     .available_memory(hannoy_memory.unwrap_or(usize::MAX))
-                    //     .progress(|step| progress.update_progress_from_hannoy(step))
-                    //     .cancel(cancel)
-                    //     .build(wtxn)?;
-                    unimplemented!("switching from quantized to non-quantized");
+                    let writer = writer.prepare_changing_distance::<BinaryQuantizedCosine>(wtxn)?;
+                    writer
+                        .builder(rng)
+                        .available_memory(hannoy_memory.unwrap_or(usize::MAX))
+                        // .progress(|step| progress.update_progress_from_hannoy(step))
+                        .cancel(cancel)
+                        .ef_construction(HANNOY_EF_CONSTRUCTION)
+                        .build::<HANNOY_M, HANNOY_M0>(wtxn)?;
                 } else if writer.need_build(wtxn)? {
                     writer
                         .builder(rng)
                         .available_memory(hannoy_memory.unwrap_or(usize::MAX))
                         // .progress(|step| progress.update_progress_from_hannoy(step))
-                        // .cancel(cancel)
+                        .cancel(cancel)
                         .ef_construction(HANNOY_EF_CONSTRUCTION)
                         .build::<HANNOY_M, HANNOY_M0>(wtxn)?;
                 } else if writer.is_empty(wtxn)? {