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https://issues.apache.org/jira/browse/SOLR-13350?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17869177#comment-17869177
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Ishan Chattopadhyaya commented on SOLR-13350:
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Despite a lot of looking into, I haven't been able to pin point why this is
slower than single threaded search (based on the dataset/benchmark posted
above).
Given that we are so close to 9.7 release, I'm going to work on keeping this
disabled by default (with instructions on how enable it for someone who wants
to test it out). I'm working on the patch for this, but if someone has any
concerns/objections, please let me know. FYI [~anshum].
> Explore collector managers for multi-threaded search
> ----------------------------------------------------
>
> Key: SOLR-13350
> URL: https://issues.apache.org/jira/browse/SOLR-13350
> Project: Solr
> Issue Type: New Feature
> Reporter: Ishan Chattopadhyaya
> Assignee: Ishan Chattopadhyaya
> Priority: Blocker
> Labels: pull-request-available
> Fix For: 9.7
>
> Attachments: SOLR-13350-pre-PR-2508.patch, SOLR-13350.patch,
> SOLR-13350.patch, SOLR-13350.patch
>
> Time Spent: 17h 10m
> Remaining Estimate: 0h
>
> AFAICT, SolrIndexSearcher can be used only to search all the segments of an
> index in series. However, using CollectorManagers, segments can be searched
> concurrently and result in reduced latency. Opening this issue to explore the
> effectiveness of using CollectorManagers in SolrIndexSearcher from latency
> and throughput perspective.
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