Steve Loughran created YARN-4142:
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             Summary: add a way for an attempt to report an attempt failure
                 Key: YARN-4142
                 URL: https://issues.apache.org/jira/browse/YARN-4142
             Project: Hadoop YARN
          Issue Type: Sub-task
          Components: api
    Affects Versions: 2.8.0
            Reporter: Steve Loughran


Currently AMs can report a failure with exit code and diagnostics text —but 
only when exiting to a failed state. If the AM terminates for any other reason 
there's no information held in the RM, just the logs somewhere —and we know 
they don't always last.

When an application explicitly terminates an attempt, it would be nice if it 
could  optionally report something to the RM before it exited. The most recent 
set of these could then be included in Application Reports, so allowing client 
apps to count attempt failures and get exit details.



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