[jira] [Created] (FLINK-15927) TaskExecutor should treat it as a fatal error is Task cannot be failed

["Stephan Ewen (Jira)" <ji...@apache.org>]

Stephan Ewen created FLINK-15927:
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             Summary: TaskExecutor should treat it as a fatal error is Task cannot be failed
                 Key: FLINK-15927
                 URL: https://issues.apache.org/jira/browse/FLINK-15927
             Project: Flink
          Issue Type: Bug
          Components: Runtime / Task
            Reporter: Stephan Ewen


When the TaskManager cannot mark a task as failed, it is only logged as a warning.
This should instead be treated as a fatal error.

TaskExecutor line 1419:
{code}
try {
	task.failExternally(cause);
} catch (Throwable t) {
	log.error("Could not fail task {}.", executionAttemptID, t);
}
{code}



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