Github user StephanEwen commented on the pull request:
https://github.com/apache/flink/pull/750#issuecomment-142973877
I am curious here, is the `stop()` method implemented differently in any
function differently than the `cancel()` method?
What would speak against implementing the entire stopping behavior super
lightweight by simply canceling the sources without transitioning them to
`CANCELED` upon success, but to `FINISHED`. Would that not give us the same
thing?
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