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https://issues.apache.org/jira/browse/MAPREDUCE-4879?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13625123#comment-13625123
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Gelesh commented on MAPREDUCE-4879:
-----------------------------------
[~jira.shegalov]
Since TeraOutputFormat extends FileOutputFormat, it must be in compliance with
checkOutputSpecs(), of FileOutputFormat. And checkOutputSpecs() is supposed to
be called from Job Client. If there is any issue, I feel it would be better to
fix it within the existing control flow.
> 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
> Attachments: MAPREDUCE-4879-trunk.patch,
> MAPREDUCE-4879-trunk-rev1.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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