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  • Added ShapeDocValues/Field, a unified abstraction to represent existing types: XY and lat/long.
  • FacetSets can now be filtered using a Query via MatchingFacetSetCounts.
  • SortField now allows control over whether to apply index-sort optimizations.
  • Support for Java 19 foreign memory support access ("project Panama") was added. Applications started with command line parameter "java --enable-preview" will automatically use the new foreign memory API of Java 19 to access indexes on disk with MMapDirectory. This is an opt-in feature and requires explicit Java command line flag passed in to your application's Java process (e.g., modify startup parameters of Solr or Elasticsearch/Opensearch)! When enabled, Lucene logs a notice using java.util.logging. Please test thoroughly and report bugs/slowness to Lucene's mailing list. When the new API is used, MMapDirectory will mmap Lucene indexes in chunks of 16 GiB (instead of 1 GiB) and indexes closed while queries are running can no longer crash the JVM.

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