Github user vasia commented on the pull request:
https://github.com/apache/flink/pull/799#issuecomment-111993642
@andralungu, I believe the same issue appears in
`ApplyCoGroupFunctionOnAllEdges` and `ApplyCoGroupFunction`. Could you check if
that's the case and fix those too if needed?
Also, adding a test might be a good idea :) Thanks!
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