Github user tgravescs commented on the pull request:
https://github.com/apache/spark/pull/5130#issuecomment-84999785
> 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.
@zsxwing Can you clarify this? Are you running something that never
starts SparkContext? I'm not sure what you mean by the user doesn't create
spark context but the driver exits normally.
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