Github user asfgit closed the pull request at:
https://github.com/apache/flink/pull/2508
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GitHub user fhueske opened a pull request:
https://github.com/apache/flink/pull/2508
[FLINK-2662] [dataSet] Translate union with multiple output into separate
unions with single output.
Fixes FLINK-2662 by translating Union operators with two (or more)
successors into two or more
