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From "Rohith Sharma K S (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-3916) DrainDispatcher#await should wait till event has been completely handled
Date Mon, 13 Jul 2015 06:41:06 GMT

    [ https://issues.apache.org/jira/browse/YARN-3916?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14624271#comment-14624271
] 

Rohith Sharma K S commented on YARN-3916:
-----------------------------------------

How about keeping earlier variable *drained* only, this makes more appropriate I think. 

> DrainDispatcher#await should wait till event has been completely handled
> ------------------------------------------------------------------------
>
>                 Key: YARN-3916
>                 URL: https://issues.apache.org/jira/browse/YARN-3916
>             Project: Hadoop YARN
>          Issue Type: Bug
>    Affects Versions: 2.7.0
>            Reporter: Varun Saxena
>            Assignee: Varun Saxena
>            Priority: Critical
>         Attachments: YARN-3916.01.patch, YARN-3916.02.patch
>
>
> DrainDispatcher#await should wait till event has been completely handled.
> Currently it only checks for whether event queue has become empty.
> And in many tests we directly check for a state to be changed after calling await.
> Sometimes, the states do not change by the time we check them as event has not been completely
handled.
> *This is causing test failures* such as YARN-3909 and YARN-3910 and may cause other test
failures as well.



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