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From "Ufuk Celebi (JIRA)" <j...@apache.org>
Subject [jira] [Created] (FLINK-1577) Misleading error messages when cancelling tasks
Date Wed, 18 Feb 2015 10:40:11 GMT
Ufuk Celebi created FLINK-1577:

             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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