Github user StephanEwen commented on the pull request:
https://github.com/apache/flink/pull/699#issuecomment-103925741
I just noticed this test case:
`flink-tests/src/test/scala/org/apache/flink/api/scala/DeltaIterationSanityCheckTest.scala`
The programs in this test are never meant to execute, so we need to swap
the `print()` statements with some other lazy output statement.
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