Naganarasimha G R created YARN-3995:

             Summary: Some of the NM events are not getting published due race 
condition when AM container finishes in NM 
                 Key: YARN-3995
             Project: Hadoop YARN
          Issue Type: Sub-task
          Components: nodemanager, timelineserver
    Affects Versions: YARN-2928
            Reporter: Naganarasimha G R
            Assignee: Naganarasimha G R

As discussed in YARN-3045:  While testing in TestDistributedShell found out 
that few of the container metrics events were failing as there will be race 
condition. When the AM container finishes and removes the collector for the 
app, still there is possibility that all the events published for the app by 
the current NM and other NM are still in pipeline, 

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