[jira] [Created] (FLINK-13805) Bad Error Message when TaskManager is lost

[Shang Yuanchun (Jira)]

Stephan Ewen created FLINK-13805:
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             Summary: Bad Error Message when TaskManager is lost
                 Key: FLINK-13805
                 URL: https://issues.apache.org/jira/browse/FLINK-13805
             Project: Flink
          Issue Type: Bug
          Components: Runtime / Coordination
    Affects Versions: 1.9.0
            Reporter: Stephan Ewen
             Fix For: 1.10.0, 1.9.1


When a TaskManager is lost, the job reports as the failure cause
{code}
org.apache.flink.util.FlinkException: The assigned slot 6d0e469d55a2630871f43ad0f89c786c_0 was removed.
{code}

That is a pretty bad error message, as a user I don't know what that means. Sounds like it could simply refer to internal book keeping, maybe some rebalancing or so.
You need to know a lot about Flink to understand that this means actually "TaskManager failure".




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