Zhijie Shen created YARN-407:
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Summary: The requested AM memory is not checked against the
maximum resource capacity in ResourceMgrDelegate and MRAppMaster
Key: YARN-407
URL: https://issues.apache.org/jira/browse/YARN-407
Project: Hadoop YARN
Issue Type: Bug
Reporter: Zhijie Shen
Assignee: Zhijie Shen
For the MR jobs, the requested AM memory is at the risk of being larger than
the maximum resource capacity. It is because the logic to check the requested
AM memory against the maximum resource capacity is missing in
ResourceMgrDelegate and MRAppMaster. In contrast, this logic exists in Client
and ApplicationMaster of the distributed shell.
Another potential risk is that the requested AM memory is likely to be rounded
up when being normalized, therefore the after-normalization AM memory can be
larger than the maximum resource capacity as well.
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