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Posted to notifications@accumulo.apache.org by "Sean Busbey (JIRA)" <ji...@apache.org> on 2016/09/14 23:41:20 UTC

[jira] [Updated] (ACCUMULO-4458) lock contention around configuration settings impacts tablet server performance

     [ https://issues.apache.org/jira/browse/ACCUMULO-4458?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Sean Busbey updated ACCUMULO-4458:
----------------------------------
    Status: Patch Available  (was: In Progress)

> 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: 1.8.0, 1.7.1
>            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
>
>
> 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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