diff --git a/milli/src/search/facet/incremental_update.rs b/milli/src/search/facet/incremental_update.rs
index a437efb2d..f01b19dab 100644
--- a/milli/src/search/facet/incremental_update.rs
+++ b/milli/src/search/facet/incremental_update.rs
@@ -43,8 +43,6 @@ impl<'i> IncrementalFacetUpdate<'i> {
             .prefix_iter::<_, MyByteSlice, FacetGroupValueCodec>(txn, &prefix.as_slice())?;
         if let Some(e) = prefix_iter.next() {
             let (key_bytes, value) = e?;
-            let key = FacetKeyCodec::<MyByteSlice>::bytes_decode(&key_bytes)
-                .ok_or(heed::Error::Encoding)?;
             Ok((
                 FacetKeyCodec::<MyByteSlice>::bytes_decode(&key_bytes)
                     .ok_or(Error::Encoding)?
diff --git a/milli/src/update/index_documents/typed_chunk.rs b/milli/src/update/index_documents/typed_chunk.rs
index 7a9787bdb..3c7a78d95 100644
--- a/milli/src/update/index_documents/typed_chunk.rs
+++ b/milli/src/update/index_documents/typed_chunk.rs
@@ -189,23 +189,14 @@ pub(crate) fn write_typed_chunk_into_index(
             }
         }
         TypedChunk::FieldIdFacetStringDocids(facet_id_string_docids) => {
-            append_entries_into_database(
-                facet_id_string_docids,
-                &index.facet_id_string_docids,
-                wtxn,
-                index_is_empty,
-                |value, _buffer| Ok(value),
-                |new_values, db_values, buffer| {
-                    todo!()
-                    // let (_, new_values) = decode_prefix_string(new_values).unwrap();
-                    // let new_values = RoaringBitmap::deserialize_from(new_values)?;
-                    // let (db_original, db_values) = decode_prefix_string(db_values).unwrap();
-                    // let db_values = RoaringBitmap::deserialize_from(db_values)?;
-                    // let values = new_values | db_values;
-                    // encode_prefix_string(db_original, buffer)?;
-                    // Ok(values.serialize_into(buffer)?)
-                },
-            )?;
+            // facet_id_string_docids contains the thing that the extractor put into it,
+            // so: (FacetKey { field id, level: 0, left_bound } , docids: RoaringBitmap )
+            // now we need to either:
+            // 1. incrementally add the keys/docids pairs into the DB
+            // 2. add the keys/docids into level 0 and then call Facets::execute
+            // the choice of solution should be determined by their performance
+            // characteristics
+
             is_merged_database = true;
         }
         TypedChunk::GeoPoints(geo_points) => {