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https://issues.apache.org/jira/browse/YARN-2497?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16208484#comment-16208484
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Daniel Templeton commented on YARN-2497:
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The primary motivation for queue labels is to allow for access control of
labeled resources. If we don't allow labels at the queue level, we have to
live without ACLs or build support for ACLs into node labels, which is a pretty
big change.
There are certainly new issues that will crop up because of node labels. For
example, we can block an app from going into a queue that doesn't offer the
labels it says it needs, but we can't do anything about the app making resource
requests with labels that the queue doesn't support. In that case the requests
will simply remain pending forever because the queue will not accept any node
that doesn't have a compatible label. I looked at how to mitigate that issue
specifically, and I don't see anything that's not a significant overhaul of the
way things work today. Capacity scheduler has the same issue, and thus far it
doesn't sound like it has been a big problem.
> Changes for fair scheduler to support allocate resource respect labels
> ----------------------------------------------------------------------
>
> Key: YARN-2497
> URL: https://issues.apache.org/jira/browse/YARN-2497
> Project: Hadoop YARN
> Issue Type: Sub-task
> Components: fairscheduler
> Reporter: Wangda Tan
> Assignee: Daniel Templeton
> Attachments: YARN-2497.001.patch, YARN-2497.002.patch,
> YARN-2497.003.patch, YARN-2497.004.patch, YARN-2497.005.patch,
> YARN-2497.006.patch, YARN-2497.007.patch, YARN-2497.008.patch,
> YARN-2497.009.patch, YARN-2497.010.patch, YARN-2499.WIP01.patch
>
>
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