24 March 2020, Apache Lucene™ 8.5.0 available

The Lucene PMC is pleased to announce the release of Apache Lucene 8.5.0.

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

Please read CHANGES.txt for a full list of new features and changes:

https://lucene.apache.org/core/8_5_0/changes/Changes.html

Lucene 8.5.0 Release Highlights:

New Features

• XYPointField allows you to index points in flat X,Y space and efficiently find documents that fall within a bounding box, distance or arbitrary polygon
• New query builders on LatLonShape allow you to efficiently find documents with a specific relation to a point or polygon

Optimizations & Improvements

• You can now store up to 16 data dimensions in a Point field
• KoreanTokenizer supports custom dictionaries
• Binary doc values are now compressed, and term dictionaries have improved compression
• Index flushes are up to 20% faster if all docvalues updates are updating a single field to the same value
• The index of stored fields and term vectors is now stored off-heap
• Query parsers based on QueryBuilder can boost particular terms or synonyms by setting BoostAttribute values on a token stream
• Intervals queries correctly handle repeated subterms in ordered and unordered sources

Further details of changes are available in the change log available at: https://lucene.apache.org/core/8_5_0/changes/Changes.html

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

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