Github user tillrohrmann commented on the pull request:
https://github.com/apache/flink/pull/1048#issuecomment-135767450
I agree. In both cases the compiler cannot help much to avoid forgetting
about it and, thus, it's the responsibility of the programmer to make sure that
the failure case is handled properly. It should be added to the description of
the `JobSubmitAndWait` message what can expected as the return value of the
future.
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