The Lucene PMC is pleased to announce the release of Apache Lucene 9.11.1.

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-platform.

This patch release contains bug fixes that are highlighted below. The
release is available for immediate download at:

https://lucene.apache.org/core/downloads.html

Lucene 9.11.1 Release Highlights

Bug fixes

* Fix performance regression in NumericComparator.
* Remove intra-merge parallelism for everything except HNSW graph merges.
* Fix bug that prevented adding a parent field to an index with no fields.
* Fix IndexOutOfBoundsException thrown in DefaultPassageFormatter by
unordered matches.
* StringValueFacetCounts stops throwing NPE when faceting over an
empty match-set.

Further details of changes are available in the change log available
at: http://lucene.apache.org/core/9_11_1/changes/Changes.html.

Please report any feedback to the mailing lists
(http://lucene.apache.org/core/discussion.html)

Note: The Apache Software Foundation uses an extensive mirroring
network for distributing releases. It is possible that the mirror you
are using may not have replicated the release yet. If that is the
case, please try another mirror. This also applies to Maven access.

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