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From "Karthik Kambatla (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-4756) Unnecessary wait in Node Status Updater during reboot
Date Fri, 08 Apr 2016 00:05:25 GMT

    [ https://issues.apache.org/jira/browse/YARN-4756?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15231376#comment-15231376
] 

Karthik Kambatla commented on YARN-4756:
----------------------------------------

The patch seems reasonable to me. 

+1. Also, quite excited to see a +1 from Hadoop QA. Checking this in. 

> Unnecessary wait in Node Status Updater during reboot
> -----------------------------------------------------
>
>                 Key: YARN-4756
>                 URL: https://issues.apache.org/jira/browse/YARN-4756
>             Project: Hadoop YARN
>          Issue Type: Improvement
>            Reporter: Eric Badger
>            Assignee: Eric Badger
>         Attachments: YARN-4756.001.patch, YARN-4756.002.patch, YARN-4756.003.patch, YARN-4756.004.patch,
YARN-4756.005.patch
>
>
> The startStatusUpdater thread waits for the isStopped variable to be set to true, but
it is waiting for the next heartbeat. During a reboot, the next heartbeat will not come and
so the thread waits for a timeout. Instead, we should notify the thread to continue so that
it can check the isStopped variable and exit without having to wait for a timeout. 



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