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https://issues.apache.org/jira/browse/TEZ-624?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13875569#comment-13875569
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Bikas Saha commented on TEZ-624:
--------------------------------

In MR new api is replaces part. In new api the m/r is added by the file output 
committer. In old api, we set the part-m/r. 
v1-o1 makes sense. Attaching new patch.

> Fix MROutput to support multiple outputs to the same output location
> --------------------------------------------------------------------
>
>                 Key: TEZ-624
>                 URL: https://issues.apache.org/jira/browse/TEZ-624
>             Project: Apache Tez
>          Issue Type: Bug
>            Reporter: Hitesh Shah
>            Assignee: Bikas Saha
>         Attachments: TEZ-624.1.patch, TEZ-624.2.patch
>
>
> For users using multiple MROutput instances on a single vertex   



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