mayya-sharipova commented on a change in pull request #649:
URL: https://github.com/apache/lucene/pull/649#discussion_r805395018
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File path:
lucene/core/src/java/org/apache/lucene/codecs/lucene91/Lucene91HnswVectorsWriter.java
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@@ -206,14 +214,19 @@ private void writeMeta(
meta.writeVLong(vectorIndexOffset);
meta.writeVLong(vectorIndexLength);
meta.writeInt(field.getVectorDimension());
- meta.writeInt(docIds.length);
- for (int docId : docIds) {
- // TODO: delta-encode, or write as bitset
- meta.writeVInt(docId);
+
+ // write docIDs
+ meta.writeInt(count);
+ if (docIds == null) {
+ meta.writeShort((short) -1); // dense marker, each document has a vector
value
Review comment:
No particular reason, just copied it from another file. I've modified
the code to use `writeByte` instead in ca9bfb25de247fdcf09a2039ef4b25f6c87d5c6d
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