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https://issues.apache.org/jira/browse/SOLR-15067?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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David Smiley resolved SOLR-15067.
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Fix Version/s: 8.9
Resolution: Fixed
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> 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
> Reporter: David Smiley
> Priority: Major
> Labels: newdev
> Fix For: 8.9
>
> Time Spent: 0.5h
> Remaining Estimate: 0h
>
> 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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