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https://issues.apache.org/jira/browse/MAPREDUCE-4879?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14242927#comment-14242927
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Chris Nauroth commented on MAPREDUCE-4879:
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Hi, [~jira.shegalov]. This looks good. Could you please throw
{{FileAlreadyExistsException}} instead of {{IOException}}? That would exactly
match the behavior of {{FileOutputFormat}} when it checks the output directory.
Thanks!
> TeraOutputFormat may overwrite an existing output directory
> -----------------------------------------------------------
>
> Key: MAPREDUCE-4879
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-4879
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: examples
> Affects Versions: trunk
> Reporter: Gera Shegalov
> Assignee: Gera Shegalov
> Attachments: MAPREDUCE-4879-trunk-rev1.patch,
> MAPREDUCE-4879-trunk.patch
>
>
> Unlike FileOutputFormat, TeraOutputFormat does not prevent TeraGen/Sort jobs
> from writing into an existing directory, and potentially overwriting previous
> runs.
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