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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)

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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