Github user uce commented on the pull request: https://github.com/apache/flink/pull/440#issuecomment-77125258 Hey Vasia, 1. I think the tests shouldn't print to stdout, but use the logger for test output. 2. The exceptions were wrong-fully logged for cancelled/failed task. I've fixed it yesterday in 9255594fb3b9b7c00d9088c3b630af9ecbdf22f4. Have you already rebased on the recent master? â Ufuk
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