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https://issues.apache.org/jira/browse/ACCUMULO-4458?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15494504#comment-15494504
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Christopher Tubbs commented on ACCUMULO-4458:
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bq. I was still running tests on my 1.8 merge into master before pushing it.

Cool. Thanks for the clarification. You probably already know this, but for 
anybody else who may not, you can merge locally, and push all the branches at 
once using: {{git push origin :}}


> lock contention around configuration settings impacts tablet server 
> performance
> -------------------------------------------------------------------------------
>
>                 Key: ACCUMULO-4458
>                 URL: https://issues.apache.org/jira/browse/ACCUMULO-4458
>             Project: Accumulo
>          Issue Type: Bug
>          Components: tserver
>    Affects Versions: 1.7.1, 1.8.0
>            Reporter: Sean Busbey
>            Assignee: Sean Busbey
>            Priority: Critical
>             Fix For: 1.7.3, 1.8.1, 2.0.0
>
>         Attachments: ACCUMULO-4458-1.7.v1.patch
>
>          Time Spent: 50m
>  Remaining Estimate: 0h
>
> While investigating a pretty severe performance regression comparing YCSB 
> against 1.6 and 1.7, I found a fair bit of lock contention around getting 
> configuration values. This was improved by ACCUMULO-4388, but various threads 
> eventually all started contending on the configuration values expected from 
> the site xml files.



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