Jiangjie Qin created FLINK-20081:
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Summary: ExecutorNotifier should run handler in the main thread
when receive an exception from the callable.
Key: FLINK-20081
URL: https://issues.apache.org/jira/browse/FLINK-20081
Project: Flink
Issue Type: Bug
Components: Connectors / Common
Reporter: Jiangjie Qin
Currently the {{ExecutorNotifier}} runs the {{handler}} in the worker thread if
there is an exception thrown from the {{callable}}. This breaks the threading
model and prevents an exception from bubbling up to fail the job.
Another issue is that right now, when an exception bubbles up from the
{{SourceCoordinator}}, the UncaughtExceptionHandler will call System.exit(-17)
and kill the JM. This is too much. Instead, we should just fail the job to
trigger a failover.
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