Junping Du created YARN-2489:

             Summary: ResouceOption's overcommitTimeout should be respected 
during resource update on NM
                 Key: YARN-2489
                 URL: https://issues.apache.org/jira/browse/YARN-2489
             Project: Hadoop YARN
          Issue Type: Sub-task
            Reporter: Junping Du
            Assignee: Junping Du

The ResourceOption to update NM's resource has two properties: Resource and 
OvercommitTimeout. The later property is used to guarantee resource is 
withdrawn after timeout is hit if resource is reduced to a value and current 
resource consumption exceeds the new value. It currently use default value -1 
which means no timeout, and we should make this property work when updating NM 

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