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Posted to announce@apache.org by Timothy Potter <th...@apache.org> on 2021/09/28 19:45:05 UTC

[ANNOUNCE] Apache Lucene 8.10.0 released

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The Lucene PMC is pleased to announce the release of Apache Lucene 8.10.0.

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>

### Lucene 8.10.0 Release Highlights:

#### New features
- - Multi-valued fields are now supported in numeric range facet counting
- - Added new analyzer for Telugu
- - Near-real-time readers opened from an IndexCommit can now sort their leaves
- - SimpleText codec now implements skipping for its postings lists

#### Optimizations
- - Performance improvements for faceting, including a new protected
API to control which fields are counted for drill-down during drill
sideways, and optimized drill sideways iterating
- - RegexpQuery's detection of adversarial (ReDoS) regular expressions
is improved, catching exotic cases that it missed before, and throwing
TooComplexToDeterminizeException
- - Speedup for computing the leading prefix and trailing suffix from
an Automaton, and for managing powersets during determinize
- - Speedups for stored fields retrieval with the default codec (BEST_SPEED)
- - IndexWriter uses less RAM when buffering documents, especially in
the case of many unique fields
- - forceMerge will now merge any number of segments at once, making
it much faster in many cases
- - Compression improvements for docvalues storage

... plus a number of exciting bug fixes!

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

  <https://lucene.apache.org/core/8_10_0/changes/Changes.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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