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https://issues.apache.org/jira/browse/SOLR-6820?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14556417#comment-14556417
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Yonik Seeley commented on SOLR-6820:
------------------------------------

I don't like that it's a band-aid around the real problem, but it's the best 
pseudo-workaround we currently have I guess (it's based on luck... we're just 
lowering the likelihood of a different thread hitting the blocked bucket).

+1 for raising to 65536 for 5.2

> The sync on the VersionInfo bucket in DistributedUpdateProcesser#addDocument 
> appears to be a large bottleneck when using replication.
> -------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: SOLR-6820
>                 URL: https://issues.apache.org/jira/browse/SOLR-6820
>             Project: Solr
>          Issue Type: Sub-task
>          Components: SolrCloud
>            Reporter: Mark Miller
>            Assignee: Timothy Potter
>             Fix For: Trunk, 5.2
>
>         Attachments: SOLR-6820.patch, threads.png
>
>




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