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https://issues.apache.org/jira/browse/SOLR-17947?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18046033#comment-18046033
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ASF subversion and git services commented on SOLR-17947:
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Commit a52521260b511bb0935cabf6a26ef601914cfd95 in solr's branch
refs/heads/branch_10x from Mark Robert Miller
[ https://gitbox.apache.org/repos/asf?p=solr.git;h=a52521260b5 ]
SOLR-17947: CloudSolrClient refreshes collection state asynchronously using a
dedicated thread pool to reduce ZooKeeper blocking under load. (#3960)
> CloudSolrClient async state refresh
> -----------------------------------
>
> Key: SOLR-17947
> URL: https://issues.apache.org/jira/browse/SOLR-17947
> Project: Solr
> Issue Type: Bug
> Components: SolrCloud, SolrJ
> Affects Versions: 9.9
> Reporter: Mark Robert Miller
> Assignee: Mark Robert Miller
> Priority: Major
> Labels: pull-request-available
> Time Spent: 2h 20m
> Remaining Estimate: 0h
>
> * replace striped locks with single-flight cache refresh futures to stop
> thundering herd
> * keep stale entries usable while background refresh runs, update retry
> semantics accordingly
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