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https://issues.apache.org/jira/browse/YARN-4270?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Arun Suresh updated YARN-4270:
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Issue Type: Improvement (was: Bug)
> Limit application resource reservation on nodes for non-node/rack specific
> requests
> -----------------------------------------------------------------------------------
>
> Key: YARN-4270
> URL: https://issues.apache.org/jira/browse/YARN-4270
> Project: Hadoop YARN
> Issue Type: Improvement
> Components: fairscheduler
> Reporter: Arun Suresh
> Assignee: Arun Suresh
> Fix For: 2.8.0
>
> Attachments: YARN-4270.1.patch, YARN-4270.2.patch, YARN-4270.3.patch,
> YARN-4270.4.patch, YARN-4270.5.patch
>
>
> I has been noticed that for off-switch requests, the FairScheduler reserves
> resources on all nodes. This could lead to the entire cluster being
> unavailable for all other applications.
> Ideally, the reservations should be on a configurable number of nodes,
> default 1.
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