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Add CHANGES entry for GH-13581

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Michael Sokolov 2024-08-01 10:30:28 -04:00
parent 44a9133824
commit 2f297b7735
2 changed files with 3 additions and 1 deletions
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2
lucene/CHANGES.txt
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@ -326,6 +326,8 @@ Optimizations
performance for queries that need skipping such as conjunctions. performance for queries that need skipping such as conjunctions.
(Adrien Grand) (Adrien Grand)
* GITHUB#13581: OnHeapHnswGraph no longer allocates a lock for every graph node (Mike Sokolov)
Changes in runtime behavior Changes in runtime behavior
--------------------- ---------------------

2
lucene/core/src/java/org/apache/lucene/util/hnsw/HnswLock.java
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@ -26,7 +26,7 @@ import java.util.concurrent.locks.ReentrantReadWriteLock;
* Provide (read-and-write) locked access to rows of an OnHeapHnswGraph. For use by * Provide (read-and-write) locked access to rows of an OnHeapHnswGraph. For use by
* HnswConcurrentMerger and its HnswGraphBuilders. * HnswConcurrentMerger and its HnswGraphBuilders.
*/ */
public class HnswLock { class HnswLock {
private static final int NUM_LOCKS = 512; private static final int NUM_LOCKS = 512;
private final ReentrantReadWriteLock[] locks; private final ReentrantReadWriteLock[] locks;
private final OnHeapHnswGraph graph; private final OnHeapHnswGraph graph;