Github user tillrohrmann commented on the pull request:
https://github.com/apache/flink/pull/750#issuecomment-142967362
I've just looked into the implementation of `Task.cancelTask` and there we
also spawn a new thread to cancel the task. Thus, the semantics is the same for
the `stopExecution` call. Since it is consistent, I'm fine with this
implementation.
Maybe we could call the `stopExecution` method `stopTask` so that it's
consistent with `cancelTask`.
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