24 October 2022, Apache Lucene™ 9.4.1 available

The Lucene PMC is pleased to announce the release of Apache Lucene 9.4.2

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 on high-dimensionality vectors, spell correction or query suggestions.

This patch release contains an important fix for a bug affecting version 9.4.0. The release is available for immediate download at:

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

Lucene 9.4.1 Release Highlights

Bug fixes

• When reading large segments, the kNN vectors format could fail with a validation error, preventing further writes or searches on the index. This bug is now fixed. Only version 9.4.0 was affected, so it is recommended to skip 9.4.0 if you are using kNN vectors.

Further details of changes are available in the change log available at: https://lucene.apache.org/core/9_4_1/changes/Changes.html.

Please report any feedback to the mailing lists (http://lucene.apache.org/core/discussion.html)

Note: The Apache Software Foundation now uses a content distribution network (CDN) for distributing releases.