Github user StephanEwen commented on the pull request:
https://github.com/apache/flink/pull/1048#issuecomment-135793797
Hmm... the more I work on it, the trickier it appears.
It is efficient when done rigth, but one needs to watch carefully at what
places to wrap an exception and when not.
The solution to always serialize/deserialize manually during transport is
far easier, actually...
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