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From "Varun Saxena (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-4481) negative pending resource of queues lead to applications in accepted status inifnitly
Date Sat, 19 Dec 2015 02:45:46 GMT

    [ https://issues.apache.org/jira/browse/YARN-4481?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15065186#comment-15065186

Varun Saxena commented on YARN-4481:

[~sunilg], we do not have AM debug logs. And RM debug logs are after the event so all we get
from it is that pending resources are negative which leads to the log guchi mentioned above.
Let us see if we get something more from code.

> negative pending resource of queues lead to applications in accepted status inifnitly
> -------------------------------------------------------------------------------------
>                 Key: YARN-4481
>                 URL: https://issues.apache.org/jira/browse/YARN-4481
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: capacity scheduler
>    Affects Versions: 2.7.2
>            Reporter: gu-chi
>            Priority: Critical
>         Attachments: jmx.txt
> Met a scenario of negative pending resource with capacity scheduler, in jmx, it shows:
> {noformat}
>     "PendingMB" : -4096,
>     "PendingVCores" : -1,
>     "PendingContainers" : -1,
> {noformat}
> full jmx infomation attached.
> this is not just a jmx UI issue, the actual pending resource of queue is also negative
as I see the debug log of
> bq. DEBUG | ResourceManager Event Processor | Skip this queue=root, because it doesn't
need more resource, schedulingMode=RESPECT_PARTITION_EXCLUSIVITY node-partition= | ParentQueue.java
> this lead to the {{NULL_ASSIGNMENT}}
> The background is submitting hundreds of applications and consume all cluster resource
and reservation happen. While running, network fault injected by some tool, injection types
are delay,jitter
> ,repeat,packet loss and disorder. And then kill most of the applications submitted.
> Anyone also facing negative pending resource, or have idea of how this happen?

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