[ANNOUNCE] Apache Lucene 9.12.3 released

Ankit Jain <[email protected]> Sat, 27 Sep 2025 17:51:51 -0700
Newsgroups gmane.comp.jakarta.lucene.user,gmane.comp.java.hadoop.zookeeper.devel
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The Lucene PMC is pleased to announce the release of Apache Lucene 9.12.3.


Apache Lucene is a high-performance, full-featured search engine library
written entirely in Java. It is a technology suitable for nearly any
application that requires structured search, full-text search, faceting,
nearest-neighbor search across high-dimensionality vectors, spell
correction or query suggestions.


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 9.12.3 Release Highlights:


Bug fixes

- Support for JDK24+

- Reduce sharedArenaMaxPermits from 1024 to 64

- Use READONCE to read segment infos

- Fix rare spin-loop in RefCountedSharedArena

- Ensure vector queries handle advanceShallow correctly

- Fix failure due to hole bridge being coplanar with polygon edge


Further details of changes are available in the change log available at:


  <https://lucene.apache.org/core/9_12_3/changes/Changes.html>

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