The Lucene PMC is pleased to announce the release of Apache Lucene 9.12.1.
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 9.12.1 Release Highlights
Improvements
* Allow easier configuration of the Panama vectorization provider with
newer Java versions. Set the
org.apache.lucene.vectorization.upperJavaFeatureVersion
system property to increase the set of Java versions that Panama
vectorization will provide optimized implementations for.
Bug fixes
* Fixed backwards compatibility bug that caused sparse (not all
documents have a vector) KNN indices written with 9.0.0 to give
silently (no exception) terrible recall results when searched by
any 9.x release
* Improve Tessellatorlogic when two holes share the same vertex with
the polygon which was failing in valid polygons.
* Fix backwards compatibility bug that caused 9.12.0 to incorrectly
throw IllegalStateException when trying to open an IndexReader on an
index created with quantized (int4, int7, int8) KNN vectors using
Lucene99HnswScalarQuantizedVectorsFormat.
... plus more helpful bug fixes!
Further details of changes are available in the change log available at:
http://lucene.apache.org/core/9_12_1/changes/Changes.html.
-Chris.
