[jira] [Created] (FLINK-6206) As an Engineer, I want task state transition log to be warn/error for FAILURE scenarios

[Shang Yuanchun (Jira)]

Dan Bress created FLINK-6206:
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             Summary: As an Engineer, I want task state transition log to be warn/error for FAILURE scenarios
                 Key: FLINK-6206
                 URL: https://issues.apache.org/jira/browse/FLINK-6206
             Project: Flink
          Issue Type: Improvement
          Components: Core
    Affects Versions: 1.2.0
            Reporter: Dan Bress
            Priority: Critical


If a task fails due to an exception, I would like that to be logged at a warn or an error level.  currently its info

{code}
private boolean transitionState(ExecutionState currentState, ExecutionState newState, Throwable cause) {
                if (STATE_UPDATER.compareAndSet(this, currentState, newState)) {
                        if (cause == null) {
                                LOG.info("{} ({}) switched from {} to {}.", taskNameWithSubtask, executionId, currentState, newState);
                        } else {
                                LOG.info("{} ({}) switched from {} to {}.", taskNameWithSubtask, executionId, currentState, newState, cause);
                        }

                        return true;
                } else {
                        return false;
                }
        }
{code}



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