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https://issues.apache.org/jira/browse/YARN-2604?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14220199#comment-14220199
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Karthik Kambatla commented on YARN-2604:
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Thanks Robert. One more thing I missed - we need to handle vcores in addition
to memory. I was hoping this would come for free with "Resource" suggestion,
but from looking at the code, I think we should handle vcores alongside memory
the way the patch does now.
> Scheduler should consider max-allocation-* in conjunction with the largest
> node
> -------------------------------------------------------------------------------
>
> Key: YARN-2604
> URL: https://issues.apache.org/jira/browse/YARN-2604
> Project: Hadoop YARN
> Issue Type: Improvement
> Components: scheduler
> Affects Versions: 2.5.1
> Reporter: Karthik Kambatla
> Assignee: Robert Kanter
> Attachments: YARN-2604.patch, YARN-2604.patch, YARN-2604.patch,
> YARN-2604.patch, YARN-2604.patch
>
>
> If the scheduler max-allocation-* values are larger than the resources
> available on the largest node in the cluster, an application requesting
> resources between the two values will be accepted by the scheduler but the
> requests will never be satisfied. The app essentially hangs forever.
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