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Posted to announce@apache.org by Chris Hegarty <ch...@apache.org> on 2025/06/20 16:26:21 UTC

[ANNOUNCE] Apache Lucene 9.12.2 released

The Lucene PMC is pleased to announce the release of Apache Lucene 9.12.2.

Apache Lucene is a high-performance, full-featured text search engine
library written entirely in Java. It is a technology suitable for nearly
any application that requires full-text search, especially cross-platform.

This patch release contains bug fixes that are highlighted below. The
release is available for immediate download at:

https://lucene.apache.org/core/downloads.html

Lucene 9.12.2 Release Highlights

Bug fixes
  * Reduce NeighborArray on-heap memory during HNSW graph building
  * Fix IndexSortSortedNumericDocValuesRangeQuery for int sort
  * ValueSource.fromDoubleValuesSource(dvs).getSortField() would throw
    errors when used if the DoubleValuesSource needed scores
  * Disable connectedComponents logic in HNSW graph building.

Further details of changes are available in the change log available at:
http://lucene.apache.org/core/9_12_2/changes/Changes.html.

-Chris.