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Posted to yarn-issues@hadoop.apache.org by "Li Lu (JIRA)" <ji...@apache.org> on 2016/10/27 18:39:01 UTC

[jira] [Updated] (YARN-4198) CapacityScheduler locking / synchronization improvements

     [ https://issues.apache.org/jira/browse/YARN-4198?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Li Lu updated YARN-4198:
------------------------
    Component/s: capacity scheduler

> CapacityScheduler locking / synchronization improvements
> --------------------------------------------------------
>
>                 Key: YARN-4198
>                 URL: https://issues.apache.org/jira/browse/YARN-4198
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: capacity scheduler
>            Reporter: Carlo Curino
>            Assignee: Alexey Tumanov
>              Labels: oct16-hard
>         Attachments: YARN-4198-v1.patch
>
>
> In the context of YARN-4193 (which stresses the RM/CS performance) we found several performance problems with  in the locking/synchronization of the CapacityScheduler, as well as inconsistencies that do not normally surface (incorrect locking-order of queues protected by CS locks etc). This JIRA proposes several refactoring that improve this.



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