[GitHub] [lucene] jtibshirani commented on a diff in pull request #870: LUCENE-10502: Refactor hnswVectors format

[GitBox <gi...@apache.org>]

jtibshirani commented on code in PR #870:
URL: https://github.com/apache/lucene/pull/870#discussion_r867171666


##########
lucene/core/src/java/org/apache/lucene/codecs/lucene92/Lucene92HnswVectorsFormat.java:
##########
@@ -0,0 +1,154 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.lucene.codecs.lucene92;
+
+import java.io.IOException;
+import org.apache.lucene.codecs.KnnVectorsFormat;
+import org.apache.lucene.codecs.KnnVectorsReader;
+import org.apache.lucene.codecs.KnnVectorsWriter;
+import org.apache.lucene.codecs.lucene90.IndexedDISI;
+import org.apache.lucene.index.SegmentReadState;
+import org.apache.lucene.index.SegmentWriteState;
+import org.apache.lucene.search.DocIdSetIterator;
+import org.apache.lucene.store.IndexOutput;
+import org.apache.lucene.util.hnsw.HnswGraph;
+
+/**
+ * Lucene 9.2 vector format, which encodes numeric vector values and an optional associated graph
+ * connecting the documents having values. The graph is used to power HNSW search. The format
+ * consists of three files:
+ *
+ * <h2>.vec (vector data) file</h2>

Review Comment:
   Should we add information about the new data from `IndexedDISI#writeBitSet` and `DirectMonotonicWriter`?



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