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https://issues.apache.org/jira/browse/YARN-394?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Bikas Saha updated YARN-394:
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Assignee: Bikas Saha
> RM should be able to return requests that it cannot fulfill
> -----------------------------------------------------------
>
> Key: YARN-394
> URL: https://issues.apache.org/jira/browse/YARN-394
> Project: Hadoop YARN
> Issue Type: Sub-task
> Reporter: Bikas Saha
> Assignee: Bikas Saha
>
> Currently, the RM has no way of returning requests that cannot be met. e.g.
> if the app wants a specific node and that node dies, then the RM should
> return that request instead of holding onto to it indefinitely. Currently,
> since every request can be met at * locality such a situation is hard to
> repro. It can however happen that all nodes in a cluster become unavailable.
> At that point, there is no way the RM can inform the apps about its inability
> to allocate requests.
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