Github user StephanEwen commented on the pull request:
https://github.com/apache/flink/pull/1387#issuecomment-159227726
Ah, okay, so I skipped a version by accident ;-) I think that original
change could not quite have worked, as it would have propagated the wrong
TypeInfos to the ArrayKeySelector and OutputSerializer. The one with `map()`
looks good...
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