?? July 2022, Apache Lucene™ 9.3 available
The Lucene PMC is pleased to announce the release of Apache Lucene 9.3
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 on high-dimensionality vectors, spell correction or query suggestions.
This release contains numerous features, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:
https://lucene.apache.org/core/downloads.html
Lucene 9.3 Release Highlights
New features
- Merge on full flush is enabled now by default.
- Add getAllChildren functionality to facets.
- Added facetsets module for high dimensional (hyper-rectangle) faceting.
Optimizations
- Implement Block-Max-Maxscore for 2 clauses disjunction.
- BooleanQuery can return quick counts for simple boolean queries.
- Vector similarity function and NeigborQueue reverse removal.
Other
- Update randomizedtesting to 2.8.0, hppc to 0.9.1, morfologik to 2.1.9.
... plus a number of helpful bug fixes!
Further details of changes are available in the change log available at: https://lucene.apache.org/core/9_3_0/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.