15 June 2015, Apache Lucene™ 5.2.1 available

The Lucene PMC is pleased to announce the release of Apache Lucene 5.2.1

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 various bug fixes and optimizations since the 5.2.0 release. The release is available for immediate download at:

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

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

https://lucene.apache.org/core/5_2_1/changes/Changes.html

Lucene 5.2.1 includes 3 bug fixes:

• Fix class loading deadlock relating to Codec initialization, default codec and SPI discovery.
• NRT readers now reflect a new commit even if there is no change to the commit user data
• Queries now get a dummy Similarity when scores are not needed in order to not load unnecessary information like norms
  

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 goes for Maven access.