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https://issues.apache.org/jira/browse/SOLR-6820?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14234328#comment-14234328
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Yonik Seeley commented on SOLR-6820:
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That's pretty surprising... with a 6 core CPU, it's unclear how 256 buckets
could cause that much contention. The id's are UUIDs, and they are hashed with
murmur3... it should be well distributed. Is the occasional block causing
something else bad to happen in the whole stack (sending clients, etc)?
> 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
>
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