Stephan Ewen created FLINK-8885:

             Summary: The DispatcherThreadFactory should register uncaught 
exception handlers
                 Key: FLINK-8885
             Project: Flink
          Issue Type: Bug
          Components: TaskManager
            Reporter: Stephan Ewen
            Assignee: Stephan Ewen
             Fix For: 1.5.0, 1.6.0

The {{DispatcherThreadFactory}} is responsible for spawning the thread pool 
threads for TaskManager's async dispatcher and for the CheckpointCoordinators 
timed trigger.

In case of uncaught exceptions in these threads, the system is not healthy and 
more, hence they should register the {{FatalExitUcaughtExceptionsHandler}}.

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