Github user zohar-mizrahi commented on the issue: https://github.com/apache/flink/pull/5333 Just started to look at your changes and have one comment with respect to the plan.py - have you tried executing the same script twice, but on the second time change one line in the script (.e.g a map function)? Make sure the change takes place for the second run. (BTW - I'm not sure I'll be able to spend much time in the near future in reviewing the whole changes)
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