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27 Sep 2021, Apache Lucene™ 8.10 available

The Lucene PMC is pleased to announce the release of Apache Lucene 8.10.

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Lucene 8.10 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
• Multi-valued fields are now supported in numeric range facet counting
• 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 ForceMerge will now merge any number of segments at once, making it much faster in many cases
• Compression improvements for docvalues storage
• Added new analyzer for Telugu
Near-real-time readers opened from an IndexCommit can now sort their leaves

... plus a number of exciting bug fixes!

Further details of changes are available in the change log available at: http://lucene.apache.org/core/8_10/changes/Changes.html

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