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Posted to yarn-issues@hadoop.apache.org by "Kuhu Shukla (JIRA)" <ji...@apache.org> on 2015/09/25 17:20:05 UTC

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

    [ https://issues.apache.org/jira/browse/YARN-4198?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14908136#comment-14908136 ] 

Kuhu Shukla commented on YARN-4198:
-----------------------------------

[~curino] May I assign this JIRA to myself in case its not taken.

> CapacityScheduler locking / synchronization improvements
> --------------------------------------------------------
>
>                 Key: YARN-4198
>                 URL: https://issues.apache.org/jira/browse/YARN-4198
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>            Reporter: Carlo Curino
>
> 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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