Github user zsxwing commented on the pull request:
https://github.com/apache/spark/pull/5130#issuecomment-84869736
> Also, how were we ending up with a success before? If anything forced us
to break out of that try block, it seems like we wouldn't call finish with
SUCCESS . Or does YARN just assume success in the case where we shut down
without a report? (I can look this up if you don't know).
After #4773, it should not end up with a success for OutOfMemoryError.
However, in my experience, if `AMRMClient.unregisterApplicationMaster` has
not been called, Yarn will restart the AM until exceeding the max attempts. So
if the user does not create a `SparkContext` and the driver code exits
normally, Yarn still will restart the AM. We have an ugly fix that forcing AM
to register and unregister with Yarn if finding AM does not register when
exiting.
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