Download 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.