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https://issues.apache.org/jira/browse/SOLR-15067?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17330450#comment-17330450
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Bence Szabó commented on SOLR-15067:
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Thank you for the information, I will try to duplicate the implementation into
ChildDocTransformerFactory and test if it's working.
I am quite new in this community, since I recently started working with solr,
and I was trying to look for issues which I can handle and familiarise with the
codebase. I searched for newdev labeled open issues and this was the first one
I found and no one was working on, so I looked into it.
> 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
>
> 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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