David Smiley created SOLR-15067:
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Summary: Child doc transformer should use the perSegFilter cache
Key: SOLR-15067
URL: https://issues.apache.org/jira/browse/SOLR-15067
Project: Solr
Issue Type: Improvement
Security Level: Public (Default Security Level. Issues are Public)
Reporter: David Smiley
The ChildDocTransformerFactory creates a QueryBitSetProducer every time. These
are heavy to compute; they should be cached. BlockJoinParentQParserPlugin does
this correctly, using the "perSegFilter" named Solr cache. They should both do
the same. To avoid duplication of logic, consider creating a new class named
something like PerSegFilterCacheManager, or maybe manage directly on
SolrIndexSearcher (alas; SIS is huge).
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