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https://issues.apache.org/jira/browse/YARN-4792?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Yufei Gu resolved YARN-4792.
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Resolution: Won't Fix
> FairScheduler should do sanity checks on its configuration
> ----------------------------------------------------------
>
> Key: YARN-4792
> URL: https://issues.apache.org/jira/browse/YARN-4792
> Project: Hadoop YARN
> Issue Type: Improvement
> Components: fairscheduler
> Affects Versions: 2.9.0
> Reporter: Yufei Gu
> Assignee: Yufei Gu
>
> The FairScheduler does not perform any sanity checks on the configuration
> that it uses.
> This can lead to a configuration that is legal but does not make sense in a
> cluster to use, and causes support cases to be filed:
> limit the root queue to a certain size for memory or vcores: the cluster
> resources limit the root queue already and there should be no need for an
> extra artificial limit
> setting max running applications on a leaf queue larger than the parent
> queue(s)
> setting max running applications larger than the queue size (example: minimum
> vcore allocation * number of apps > total vcores in the queue)
> There are possibly more checks
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