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20 Feb 2024, Apache Lucene™ 9.10 available

The Lucene PMC is pleased to announce the release of Apache Lucene 9.10.

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  • Support for similarity-based vector searches, ie. finding all nearest neighbors whose similarity is greater than a configured threshold from a query vector. See [Byte|Float]VectorSimilarityQuery.
  • Index sorting is now compatible with block joins. See IndexWriterConfig#setParentField.
  • MMapDirectory now takes advantage of the now finalized JDK foreign memory API internally when running on Java 22 (or later). This was only supported with Java 19 to 21 until now.
  • SIMD Vectorization vectorization now takes advantage of JDK vector incubator on Java 22. This was only supported with Java 20 or 21 until now.

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