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https://issues.apache.org/jira/browse/SOLR-17841?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18105280#comment-18105280
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ASF subversion and git services commented on SOLR-17841:
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Commit 3beb0dc5f2814fb607aa458fb4274453dbf4ec12 in solr's branch
refs/heads/main from Puneet Ahuja
[ https://gitbox.apache.org/repos/asf?p=solr.git;h=3beb0dc5f28 ]
SOLR-17841: Use faster DocSetCollector when multiThreaded=true (#4724)
Improved multiThreaded=true performance when a docset is needed (e.g. faceting).
Co-authored-by: David Smiley <[email protected]>
> Investigate multithreaded search performance bottlenecks
> --------------------------------------------------------
>
> Key: SOLR-17841
> URL: https://issues.apache.org/jira/browse/SOLR-17841
> Project: Solr
> Issue Type: Improvement
> Reporter: Ishan Chattopadhyaya
> Priority: Blocker
> Labels: pull-request-available
> Fix For: 10.0
>
> Attachments: profile.html
>
> Time Spent: 1h 50m
> Remaining Estimate: 0h
>
> Ever since multithreaded search (SOLR-13350) was introduced, there has been
> not much effort to benchmark the performance benefit or investigate the
> performance bottlenecks. Anecdotally, it is not faster than single threaded
> execution.
> Thanks to [~kevinliang01] [~liangkaiwen] [~liangkw16] and [~dsmiley] for
> bringing this up, yesterday on a dense vector working group meeting.
> I'm marking this as a release 10.0 blocker, because it is embarrassing to be
> releasing with such a gaping hole.
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