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https://issues.apache.org/jira/browse/SOLR-6336?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14090797#comment-14090797
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ASF subversion and git services commented on SOLR-6336:
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Commit 1616772 from [~markrmil...@gmail.com] in branch 'dev/branches/branch_4x'
[ https://svn.apache.org/r1616772 ]
SOLR-6336: Cache children as well so that they can be returned when the watcher
is reused.
> DistributedQueue (and it's use in OCP) leaks ZK Watches
> -------------------------------------------------------
>
> Key: SOLR-6336
> URL: https://issues.apache.org/jira/browse/SOLR-6336
> Project: Solr
> Issue Type: Bug
> Components: SolrCloud
> Reporter: Ramkumar Aiyengar
> Assignee: Mark Miller
>
> The current {{DistributedQueue}} implementation leaks ZK watches whenever it
> finds children or times out on finding one. OCP uses this in its event loop
> and can loop tight in some conditions (when exclusivity checks fail), leading
> to lots of watches which get triggered together on the next event (could be a
> while for some activities like shard splitting).
> This gets exposed by SOLR-6261 which spawns a new thread for every parallel
> watch event.
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