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From "Weiwei Yang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-4165) An outstanding container request makes all nodes to be reserved causing all jobs pending
Date Mon, 21 Dec 2015 08:08:46 GMT

    [ https://issues.apache.org/jira/browse/YARN-4165?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15066174#comment-15066174
] 

Weiwei Yang commented on YARN-4165:
-----------------------------------

I was not able to reproduce this problem in yarn. After investigation, I found this was not
a yarn bug, it was caused by a slider bug, see more in SLIDER-1025. Close this one as invalid.

> An outstanding container request makes all nodes to be reserved causing all jobs pending
> ----------------------------------------------------------------------------------------
>
>                 Key: YARN-4165
>                 URL: https://issues.apache.org/jira/browse/YARN-4165
>             Project: Hadoop YARN
>          Issue Type: Improvement
>          Components: capacity scheduler, resourcemanager, scheduler
>    Affects Versions: 2.7.1
>            Reporter: Weiwei Yang
>            Assignee: Weiwei Yang
>
> We have a long running service in YARN, it has an outstanding container request that
YARN cannot satisfy (require more memory that nodemanager can supply). Then YARN reserves
all nodes for this application, when I submit other jobs (require relative small memory that
nodemanager can supply), all jobs are pending because YARN skips scheduling containers on
the nodes that have been reserved.



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