17 Jun 2022,  Apache Solr™ 8.11.2 available

The Solr PMC is pleased to announce the release of Apache Solr 8.11.2

Solr is the popular, blazing fast, open source NoSQL search platform from the Apache Lucene project. Its major features include powerful full-text search, hit highlighting, faceted search and analytics, rich document parsing, geospatial search, extensive REST APIs as well as parallel SQL. Solr is enterprise grade, secure and highly scalable, providing fault tolerant distributed search and indexing, and powers the search and navigation features of many of the world's largest internet sites.

This release contains several bug fixes. The release is available for immediate download at:


Please read CHANGES.txt for a detailed list of changes:


Solr 8.11.2 Release Highlights


  • SOLR-15871: Update Log4J to 2.17.1
  • SOLR-15961: Fix bug in PKIAuthenticationPlugin that can cause a request to fail with 401 Unauthorized instead of re-fetching expired remote keys from other nodes.
  • SOLR-14569: Configuring a shardHandlerFactory on the /select requestHandler results in HTTP 401 when searching on alias in secured Solr.
  • SOLR-16022: Enforce special character requirements on passwords with length less than 15
  • SOLR-16075: ShowFileHandler path parameter is now validated to be relative to instance conf dir in standalone mode


  • SOLR-15849: Fix the connection reset problem caused by the incorrect use of 4LW with \n when monitoring zooKeeper status
  • SOLR-16199: Improve query syntax construction for SQL LIKE clause with phrases and wildcards
  • SOLR-16143: SolrConfig can miss updates from ZooKeeper when deleting and recreating file items

A summary of important changes is published in the Solr Reference Guide at https://solr.apache.org/docs/8_11_2/solr-upgrade-notes.html. For the most exhaustive list, see the full release notes at https://solr.apache.org/docs/8_11_2/changes/Changes.html or by viewing the CHANGES.txt file accompanying the distribution.

Solr's release notes usually don't include Lucene layer changes.  Lucene's release notes are at Lucene 8.11.2 Release Notes

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