lucene
https://github.com/apache/lucene
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- Issues
- Propagate getMergeInstance() through the quantized vector readers
- Add LiveDocs.toFixedBitSet specialization in FixedBitSet.copyOf
- IndexWriter rollback deletes uncommitted segment files while pooled readers are still open
- Improvements to the sandboxed de-duplicating vector format
- HNSW merge-reuse graph repair runs single-threaded on the merge thread, slowing down merges
- Filtered kNN: accept set built one doc at a time with deletions, cached filter bypassed, every vector scanned for small filters, off-heap lookup per accept test on sparse fields
- Add Query#isKnownToMatchAllDocs() to replace == checks
- Allow SortedNumericDocValues Updates when update is actually single valued
- Allow single-valued updates for SortedNumericDocValues
- Add ReturnFieldsRetriever: concurrent scatter/gather utility for per-hit return fields
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