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From "Vinod Kumar Vavilapalli (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-8193) YARN RM hangs abruptly (stops allocating resources) when running successive applications.
Date Sat, 01 Dec 2018 05:05:00 GMT

    [ https://issues.apache.org/jira/browse/YARN-8193?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16705637#comment-16705637

Vinod Kumar Vavilapalli commented on YARN-8193:

Silly me, trunk is still branch-3 as pointed offline by [~leftnoteasy]. Looks like this was
an accidentally created branch, we should get it removed.

> YARN RM hangs abruptly (stops allocating resources) when running successive applications.
> -----------------------------------------------------------------------------------------
>                 Key: YARN-8193
>                 URL: https://issues.apache.org/jira/browse/YARN-8193
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: yarn
>            Reporter: Zian Chen
>            Assignee: Zian Chen
>            Priority: Critical
>             Fix For: 3.2.0, 3.1.1
>         Attachments: YARN-8193-branch-2-001.patch, YARN-8193-branch-2.9.0-001.patch,
YARN-8193.001.patch, YARN-8193.002.patch
> When running massive queries successively, at some point RM just hangs and stops allocating
resources. At the point RM get hangs, YARN throw NullPointerException  at RegularContainerAllocator.getLocalityWaitFactor.
> There's sufficient space given to yarn.nodemanager.local-dirs (not a node health issue,
RM didn't report any node being unhealthy). There is no fixed trigger for this (query or operation).
> This problem goes away on restarting ResourceManager. No NM restart is required. 

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