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Posted to issues@solr.apache.org by "David Smiley (Jira)" <ji...@apache.org> on 2024/02/04 00:28:00 UTC

[jira] [Resolved] (SOLR-17144) Each unused core has a dormant but active thread

     [ https://issues.apache.org/jira/browse/SOLR-17144?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

David Smiley resolved SOLR-17144.
---------------------------------
    Fix Version/s: 9.6.0
       Resolution: Fixed

Thanks Pierre!

> Each unused core has a dormant but active thread
> ------------------------------------------------
>
>                 Key: SOLR-17144
>                 URL: https://issues.apache.org/jira/browse/SOLR-17144
>             Project: Solr
>          Issue Type: Improvement
>      Security Level: Public(Default Security Level. Issues are Public) 
>    Affects Versions: 8.11, 9.4
>            Reporter: Pierre Salagnac
>            Priority: Major
>              Labels: Performance
>             Fix For: 9.6.0
>
>          Time Spent: 40m
>  Remaining Estimate: 0h
>
> Each Core in SolrCloud spawns a thread to warmup and open new searchers when needed.
> In case the Core is inactive for a while, this thread uses some resources for no good reason, and may have performance impact when we reach a very high number of cores per Solr node.
>  
> Simple fix is to spawn this thread on-demande with a short TTL to save some memory.



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