Fix filtered knn vector search when query timeouts are enabled #129440
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elasticsearchmachine added the Team:Search Relevance 
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tteofili approved these changes Jun 16, 2025
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Turns out when we have query cancellation checks turned on, we wrap the filter bitset, meaning we cannot actually see that the inner Bits is a bitset.
This is important for the hnsw knn format readers, see:
https://github.com/apache/lucene/blob/1584c05b27ac31fbccb0ab328bf9f8eb6a7de414/lucene/core/src/java/org/apache/lucene/codecs/lucene99/Lucene99HnswVectorsReader.java#L335
Related: #126876