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https://issues.apache.org/jira/browse/CRUNCH-279?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13791697#comment-13791697
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Joseph Adler commented on CRUNCH-279:
-------------------------------------
Probably because I've never read the Java documentation and didn't realize I
could throw a RuntimeException there. Oops. I should probably close the ticket.
> Allow DoFn.process to throw exceptions
> --------------------------------------
>
> Key: CRUNCH-279
> URL: https://issues.apache.org/jira/browse/CRUNCH-279
> Project: Crunch
> Issue Type: Improvement
> Components: Core
> Affects Versions: 0.7.0
> Reporter: Joseph Adler
> Assignee: Josh Wills
>
> Currently, the DoFn process method doesn't throw any exceptions. This forces
> me to (a) catch all exceptions internally (which is good), but then (b) do
> something unnatural (like a deliberate null pointer exception) to stop
> processing and cause the job to fail.
> If only we could just throw an exception from DoFn (like, say, an
> IOException, which both Mapper.map and Reducer.reduce can throw), we could
> have a better way to cause a task to fail on error.
> If other people think this is useful, I'll submit a patch.
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