Github user mjsax commented on the pull request:
https://github.com/apache/flink/pull/1387#issuecomment-158126101
In `FlinkTopologyBuilder` I had to introduce a *token* for operator names
which is used in `WrapperSetupHelper` to get the original name of an operator
(Flink changes operator names when chaining happens). This is quite hacky. If
anybody has a better idea how to solve this, please let me know.
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