Bikas Saha created YARN-394:
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Summary: 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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