Github user sachingoel0101 commented on the pull request:
https://github.com/apache/flink/pull/1214#issuecomment-146913514
IMO even removing the detached mode might be better than restricting to
`Program` interface. Instead of failing late in the execution, or with a
non-informative warning, it would be better to fail before submitting anything
to the JobManager, and throw a nice exception message documenting the exact
cause of failure.
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