SOLR-18304: Optimize collapse performance for String fields in Solr 9.x and later#4621

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bartoszfidrysiak wants to merge 12 commits into

apache:mainfrom

bartoszfidrysiak:SOLR-18304-collapse-string-sort

Commits on Jul 10, 2026

reviewfix: Removed fetching actual segments from solr query. It was redundant.
bartoszfidrysiak
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reviewfix: Set 'type' equal to 'changed' type in changelog file
bartoszfidrysiak
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reviewfix: Changed 'title' field in the changelog file to make it compatible with PR title
bartoszfidrysiak
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reviewfix: Used pattern matching for instanceof in new code inside testAndSetGroupValues method
bartoszfidrysiak
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reviewfix: Removed empty line in CollapsingSearch to satisfy :solr:benchmark:spotlessJavaCheck
bartoszfidrysiak
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reviewfix: Moved BytesRef.deepCopyOf from LazyStringValue.java to CollapsingQParserPlugin.java
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