[jira] [Created] (FLINK-1577) Misleading error messages when cancelling tasks

["Ufuk Celebi (JIRA)" <ji...@apache.org>]

Ufuk Celebi created FLINK-1577:
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             Summary: Misleading error messages when cancelling tasks
                 Key: FLINK-1577
                 URL: https://issues.apache.org/jira/browse/FLINK-1577
             Project: Flink
          Issue Type: Improvement
          Components: Distributed Runtime
    Affects Versions: master
            Reporter: Ufuk Celebi


A user running a Flink version before bec9c4d ran into a job manager failure (fixed in bec9c4d), which lead to restarting the JM and cancelling/clearing all tasks on the TMs.

The logs of the TMs were inconclusive. I think part of that has been fixed by now, e.g. there is a log message when cancelAndClearEverything is called, but the task thread (RuntimeEnvironment) always logs an error when interrupted during the run method -- even if the task gets cancelled.

I think these error messages are misleading and only the root cause is important (i.e. non-failed tasks should be silently cancelled).



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