shubhamvishu commented on code in PR #14963:
URL: https://github.com/apache/lucene/pull/14963#discussion_r2265597285
##########
lucene/core/src/java/org/apache/lucene/codecs/lucene99/Lucene99HnswVectorsFormat.java:
##########
@@ -115,6 +115,13 @@ public final class Lucene99HnswVectorsFormat extends
KnnVectorsFormat {
/** Default to use single thread merge */
public static final int DEFAULT_NUM_MERGE_WORKER = 1;
+ /**
+ * Threshold below which HNSW graph building is bypassed for tiny segments.
Segments with fewer
+ * vectors will use flat storage only, improving indexing performance when
having frequent
+ * flushes.
+ */
+ public static final int HNSW_GRAPH_THRESHOLD = 10_000;
Review Comment:
Sure, I'll elaborate on this.
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