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https://issues.apache.org/jira/browse/SOLR-18477?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18119634#comment-18119634
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Mikhail Khludnev commented on SOLR-18477:
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passed at 10.x as well
https://ci-builds.apache.org/job/Solr/job/Solr-Test-10.x/2602/
> faster intersection, and omit stored fields for auxIndexJoin
> -------------------------------------------------------------
>
> Key: SOLR-18477
> URL: https://issues.apache.org/jira/browse/SOLR-18477
> Project: Solr
> Issue Type: Improvement
> Reporter: Mikhail Khludnev
> Assignee: Mikhail Khludnev
> Priority: Major
> Labels: pull-request-available
> Fix For: 10.1
>
> Time Spent: 20m
> Remaining Estimate: 0h
>
> There are two hotspots revealed during benchmarking SOLR-18307
> * intersection of the cached from-side query and join-column - it should be
> adaptive leapfrog instead
> * join-index causes a lot of merges, merge spend a lot of time in enumerating
> empty stored fields sic - just introduce a codec without stored fields for
> auxJoinIdex only (can opt out)
> Also add some traces (off by default)
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