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https://issues.apache.org/jira/browse/FLINK-14653?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16982685#comment-16982685
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Maximilian Michels commented on FLINK-14653:
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I'm not sure this will work because we don't know whether an exception is an
application error or a checkpointing error. I think the best solution is to
introduce a new exception which users can throw to indicate that the error is
application related. That way the underlying operator knows that an
unrecoverable error occurred. This is basically solution #1 but more explicit
due to using a checked exception.
> Job-related errors in snapshotState do not result in job failure
> ----------------------------------------------------------------
>
> Key: FLINK-14653
> URL: https://issues.apache.org/jira/browse/FLINK-14653
> Project: Flink
> Issue Type: Bug
> Components: Runtime / Checkpointing
> Reporter: Maximilian Michels
> Priority: Minor
>
> When users override {{snapshoteState}}, they might include logic there which
> is crucial for the correctness of their application, e.g. finalizing a
> transaction and buffering the results of that transaction, or flushing events
> to an external store. Exceptions occurring should lead to failing the job.
> Currently, users must make sure to throw a {{Throwable}} because any
> {{Exception}} will be caught by the task and reported as checkpointing error,
> when it could be an application error.
> It would be helpful to update the documentation and introduce a special
> exception that can be thrown for job-related failures, e.g.
> {{ApplicationError}} or similar.
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