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https://issues.apache.org/jira/browse/GIRAPH-82?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13402929#comment-13402929
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Avery Ching commented on GIRAPH-82:
-----------------------------------
Or IllegalArgumentException is fine. But we should fail before submitting the
job.
> Remove default of using ImmutableOutputCommitter
> ------------------------------------------------
>
> Key: GIRAPH-82
> URL: https://issues.apache.org/jira/browse/GIRAPH-82
> Project: Giraph
> Issue Type: Improvement
> Reporter: Jakob Homan
>
> Currently if no outputformat is specified we default to
> ImmutableOutputCommitter, essentially piping the results of the work out to
> /dev/null. This is a useful output option in some cases, but the default
> probably shouldn't be to throw away work. Making outputformat a required
> option and providing DevNullOutputFormat, or whatever, would likely save some
> surprise from users.
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