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From "Michael Weng (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (MAPREDUCE-5663) Add an interface to Input/Ouput Formats to obtain delegation tokens
Date Fri, 20 Dec 2013 23:50:10 GMT

     [ https://issues.apache.org/jira/browse/MAPREDUCE-5663?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Michael Weng updated MAPREDUCE-5663:
------------------------------------

    Attachment: MAPREDUCE-5663.patch.txt

Attached the initial patch based on GA 2.2.0.

> Add an interface to Input/Ouput Formats to obtain delegation tokens
> -------------------------------------------------------------------
>
>                 Key: MAPREDUCE-5663
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-5663
>             Project: Hadoop Map/Reduce
>          Issue Type: Improvement
>            Reporter: Siddharth Seth
>            Assignee: Michael Weng
>         Attachments: MAPREDUCE-5663.patch.txt
>
>
> Currently, delegation tokens are obtained as part of the getSplits / checkOutputSpecs
calls to the InputFormat / OutputFormat respectively.
> This works as long as the splits are generated on a node with kerberos credentials. For
split generation elsewhere (AM for example), an explicit interface is required.



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