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https://issues.apache.org/jira/browse/SOLR-13350?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17816348#comment-17816348
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David Smiley commented on SOLR-13350:
-------------------------------------

I'm confused why some of you propose other than "b" – Global.  How would the 
client/user know how many threads are appropriate?  They are not 
running/operating Solr; they don't know it's hardware or load.

> 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: Major
>         Attachments: SOLR-13350.patch, SOLR-13350.patch, SOLR-13350.patch
>
>          Time Spent: 3h 50m
>  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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