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From "Karthik Kambatla (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-2328) FairScheduler: Verify update and continuous scheduling threads are stopped when the scheduler is stopped
Date Thu, 24 Jul 2014 21:42:39 GMT

    [ https://issues.apache.org/jira/browse/YARN-2328?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14073687#comment-14073687
] 

Karthik Kambatla commented on YARN-2328:
----------------------------------------

As per the discussion on YARN-2313, it might be better to have a single thread run all background
tasks so that we guarantee the foreground tasks have a dedicated chunk of time with no thread
holding a lock on the FairScheduler which is the smallest of these tasks' periods. 

> FairScheduler: Verify update and continuous scheduling threads are stopped when the scheduler
is stopped
> --------------------------------------------------------------------------------------------------------
>
>                 Key: YARN-2328
>                 URL: https://issues.apache.org/jira/browse/YARN-2328
>             Project: Hadoop YARN
>          Issue Type: Improvement
>    Affects Versions: 2.4.1
>            Reporter: Karthik Kambatla
>            Assignee: Karthik Kambatla
>            Priority: Minor
>         Attachments: yarn-2328-1.patch, yarn-2328-2.patch, yarn-2328-2.patch
>
>
> FairScheduler threads can use a little cleanup and tests. To begin with, the update and
continuous-scheduling threads should extend Thread and handle being interrupted. We should
have tests for starting and stopping them as well. 



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