Github user StephanEwen commented on the pull request:
https://github.com/apache/flink/pull/1526#issuecomment-173240931
Thanks for fixing this, looks like a good issue!
One suggestion for a change: Rather than collecting the CoLocationGroups in
an extra set in the ExecutionGraph, can you iterate over the
ExecutionJobvertices and simply reset them there?
I think each field less on the ExecutionGraph makes this simpler to
maintain and more future-proof.
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