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Posted to mapreduce-issues@hadoop.apache.org by "Chris Nauroth (JIRA)" <ji...@apache.org> on 2014/12/11 19:43:13 UTC

[jira] [Commented] (MAPREDUCE-4879) TeraOutputFormat may overwrite an existing output directory

    [ https://issues.apache.org/jira/browse/MAPREDUCE-4879?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14242927#comment-14242927 ] 

Chris Nauroth commented on MAPREDUCE-4879:
------------------------------------------

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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