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From "Arun C Murthy (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (YARN-394) RM should be able to return requests that it cannot fulfill
Date Tue, 12 Feb 2013 05:45:14 GMT

     [ https://issues.apache.org/jira/browse/YARN-394?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Arun C Murthy updated YARN-394:
-------------------------------

    Issue Type: Sub-task  (was: Improvement)
        Parent: YARN-397
    
> 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
>
> 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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