Software Update: Apache Lucene & Solr 8.1.1

The Apache Software Foundation has released new versions of Lucene and Solr with version number 8.1.1. Lucene can be deployed as part of a search engine. Namely, it can perform full text indexing. solr can then be deployed as a search engine using Lucene in the background and running as a Java Servlet within, for example, Tomcat. The announcements for these releases are as follows:

Apache Lucene 8.1.1 available

This release contains no change over 8.1.

Lucene 8.1.0 Release Highlights:

  • A query introspection API has been introduced.
  • Luke, well-known GUI for inspecting Lucene indexes, now added as a Lucene module
  • Merging dimensional points to use radix partitioning, which has also been optimized
  • Bugfix: LatLonShapePolygonQuery returns incorrect WITHIN results with shared boundaries
  • TieredMergePolicy#findForcedMerges now tries to create the cheapest merges
  • Build point writers in the BKD tree only when they are needed
  • SynonymQuery can now deboost the document frequency of each term when blending synonym scores
  • ConstantScoreQuery can early terminate if minimum score > constant score (total hits are not requested)
  • DateRangePrefixTree can now parse more precise dates

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

Apache Solr 8.1.1 available

The Lucene PMC is pleased to announce the release of Apache Solr 8.1.1
Bug Fix: SOLR-13475: Null Pointer Exception when querying collection through collection alias.

Solr 8.1.0 Release Highlights

  • Partial/Atomic Updates for nested documents. This enables atomic updates for nested documents, without the need to supply the whole nested hierarchy (which would be overwritten if absent).
  • Category Routed Aliases feature introduced for data driven assignment of documents to collections based on values ​​of a field
  • JWT Token authentication plugin with OpenID Connect implicit flow login through Admin UI
  • REINDEXCOLLECTION command for re-indexing of existing collections
  • Collection RENAME command and support using aliases in most collection admin commands
  • Read-only mode for SolrCloud collections

Solr 8.1.0 also includes many other new features as well as numerous optimizations and bugfixes of the corresponding Apache Lucene release.

Version number 8.1.1
Release status Final
Operating systems Java
Website Apache Software Foundation
License type Conditions (GNU/BSD/etc.)