Jonathan Eagles created TEZ-3930:
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             Summary: TestDagAwareYarnTaskScheduler fails on Hadoop 3
                 Key: TEZ-3930
                 URL: https://issues.apache.org/jira/browse/TEZ-3930
             Project: Apache Tez
          Issue Type: Sub-task
            Reporter: Jonathan Eagles


When scheduler shutdown is called, the AMRMClientAsyncImple serviceStop is 
invoke, which then interrupts the heartbeat thread and then proceeds to join on 
the heartbeat thread. The heartbeat thread continues to run and continues to 
throw NullPointerExceptions. The interrupt doesn't seem to cause the thread to 
be interrupted now in Hadoop 3 (is YARN-5999 to blame or Tez)



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