Title: Apache Lucene™ 8.3.0 available category: core/news URL: save_as:

The Lucene PMC is pleased to announce the release of Apache Lucene 8.3.0.

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

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 8.3.0 Release Highlights:

  • New SpanishMinimalStemFilter
  • New “export all terms and doc freqs” feature to Luke with delimiters
  • Composite Matches from multiple subqueries now allow access to their submatches, and a new NamedMatches API allows marking of subqueries and a simple way to find which subqueries have matched on a given
  • Range Query For Multiple Connected Ranges
  • LatLonDocValuesPointInPolygonQuery for LatLonDocValuesField
  • New UniformSplitPostingsFormat (name “UniformSplit”) primarily benefiting in simplicity and extensibility
  • New STUniformSplitPostingsFormat (name “SharedTermsUniformSplit”) that shares a single internal term dictionary across fields
  • DisjunctionMaxQuery more efficiently leverages impacts to skip non-competitive hits
  • BooleanQuery with no scoring clause can now early terminate the query when the total hits is not requested
  • Matches on wildcard queries will defer building their full disjunction until a MatchesIterator is pulled
  • spatial-extras quad and packed quad prefix trees now index points faster
  • Add additional leaf node level optimizations in LatLonShapeBoundingBoxQuery
  • Improve performance of WITHIN and DISJOINT queries for Shape queries by doing just one pass whenever possible
  • Introduce shared count based early termination across multiple slices
  • Blocktree‘s seekExact now short-circuits false if the term isn’t in the min-max range of the segment. Large perf gain for ID/time like data when populated sequentially
  • Show SPI names instead of class names in Luke Analysis tab
  • GraphTokenStreamFiniteStrings preserves all Token attributes through its finite strings TokenStreams
  • Introduced SpanPositionRange into XML Query Parser
  • Use a sort key instead of true distance in NearestNeighbor
  • Tessellator labels the edges of the generated triangles whether they belong to the original polygon
  • Use exact distance between point and bounding rectangle in FloatPointNearestNeighbor
  • The Korean analyzer now splits tokens on boundaries between digits and alphabetic characters
  • MoreLikeThis is biased for uncommon fields

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

https://lucene.apache.org/core/8_3_0/changes/Changes.html