Github user mxm commented on the pull request:
https://github.com/apache/flink/pull/1375#issuecomment-157736688
From what I've seen so far, users are very puzzled about execute() after
collect(). This was even more of a problem because we once had this in our
quickstart examples. Initially, I was convinced ignoring `execute()` after
`collect()` would be a good solution. On second thought, it creates new
problems like users wondering why their program doesn't do anything..
So +1 for closing the issue.
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