22 February 2016, Apache Lucene™ 5.5.0 available The Lucene PMC is pleased to announce the release of Apache Lucene 5.5.0, the last 5.X feature release before Lucene 6.0.0.
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:
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 beginning
- 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
Further details of changes are available in the change log available at: http://lucene.apache.org/core/5_5_0/changes/Changes.html
Please report any feedback to the mailing lists (http://lucene.apache.org/core/discussion.html)
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