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From "Thomas Graves (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-27) Failed refreshQueues due to misconfiguration prevents further refreshing of queues
Date Mon, 20 Aug 2012 15:37:38 GMT

    [ https://issues.apache.org/jira/browse/YARN-27?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13437939#comment-13437939

Thomas Graves commented on YARN-27:

+1 with minor change to remove extra "ms.start()" from TestQueueMetrics

Thanks Arun!
> Failed refreshQueues due to misconfiguration prevents further refreshing of queues
> ----------------------------------------------------------------------------------
>                 Key: YARN-27
>                 URL: https://issues.apache.org/jira/browse/YARN-27
>             Project: Hadoop YARN
>          Issue Type: Bug
>            Reporter: Ramya Sunil
>            Assignee: Arun C Murthy
>             Fix For: 2.1.0-alpha, 0.23.3
>         Attachments: YARN-27.patch
> Stumbled upon this problem while refreshing queues with incorrect configuration. The
exact scenario was:
> 1. Added a new queue "newQueue" without defining its capacity.
> 2. "bin/mapred queue -refreshQueues" fails correctly with "Illegal capacity of -1 for
queue root.newQueue"
> 3. However, after defining the capacity of "newQueue" followed by a second "bin/mapred
queue -refreshQueues" throws "org.apache.hadoop.metrics2.MetricsException: Metrics source
QueueMetrics,q0=root,q1=newQueue already exists!" Also see Hadoop:name=QueueMetrics,q0=root,q1=newQueue,service=ResourceManager
metrics being available even though the queue was not added.
> The expected behavior would be to refresh the queues correctly and allow addition of

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