[jira] [Commented] (GIRAPH-82) Remove default of using ImmutableOutputCommitter

["Alessandro Presta (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/GIRAPH-82?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13400696#comment-13400696 ] 

Alessandro Presta commented on GIRAPH-82:
-----------------------------------------

What exception should we throw when the output format is missing in the configuration?
                
> 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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