16 March 2019, Apache Lucene™ 8.1.0 available

The Lucene PMC is pleased to announce the release of Apache Lucene 8.1.0.

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 release contains numerous bug fixes, optimizations, and improvements, some of which are highlighted below. The release is available for immediate download at:

http://lucene.apache.org/core/mirrors-core-latest-redir.html

Lucene 8.1.0 Release Highlights:

  • A query introspection API has been introduced.
  • Luke, well-known GUI for inspecting Lucene indexes, now added as a Lucene module
  • Merging dimensional points to use radix partitioning, which has also been optimized
  • Bugfix: LatLonShapePolygonQuery returns incorrect WITHIN results with shared boundaries
  • TieredMergePolicy#findForcedMerges now tries to create the cheapest merges
  • Build point writers in the BKD tree only when they are needed
  • SynonymQuery can now deboost the document frequency of each term when blending synonym scores
  • ConstantScoreQuery can early terminate if minimum score > constant score (total hits are not requested)
  • DateRangePrefixTree can now parse more precise dates

Further details of changes are available in the change log available at: http://lucene.apache.org/core/8_1_0/changes/Changes.html

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

Note: The Apache Software Foundation uses an extensive mirroring network for distributing releases. It is possible that the mirror you are using may not have replicated the release yet. If that is the case, please try another mirror. This also applies to Maven access.

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