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From Michael McCandless <>
Subject [ANNOUNCE] Apache Lucene 5.5.0 released
Date Tue, 23 Feb 2016 10:15:51 GMT
23 February 2016, Apache Luceneā„¢ 5.5.0 available

The Lucene PMC is pleased to announce the release of Apache Lucene
5.5.0, expected to be the last 5.x feature release before Lucene

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

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

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

Lucene 5.5.0 Release Highlights:

  * JoinUtil.createJoinQuery can now join on numeric doc values fields

  * BlendedInfixSuggester now has an exponential reciprocal scoring
model, to more strongly favor suggestions with matches closer to the

  * CustomAnalyzer has improved (compile time) type safety

  * DFISimilarity implements the divergence from independence scoring model

  * Fully wrap any other merge policy using MergePolicyWrapper

  * Sandbox geo point queries have graduated into the spatial module,
and now use a more efficient binary term encoding for smaller index
size, faster indexing, and decreased search-time heap usage

  * BooleanQuery performs some new query optimizations

  * TermsQuery constructors are more GC efficient

Please report any feedback to the mailing lists

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.

Mike McCandless

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