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From "Arun C Murthy (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (MAPREDUCE-5663) Add an interface to Input/Ouput Formats to obtain delegation tokens
Date Mon, 13 Jan 2014 19:37:54 GMT

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

Arun C Murthy updated MAPREDUCE-5663:
-------------------------------------

    Status: Open  (was: Patch Available)

+1, mostly lgtm.

One nit: I'd like to change the api to 'obtainCredentials' rather than 'addCredentials'. That
threw me off a little. Last thing - a more descriptive javadoc would help too. Thanks.

> 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-5663.4.txt, MAPREDUCE-5663.5.txt, MAPREDUCE-5663.patch.txt,
MAPREDUCE-5663.patch.txt2, MAPREDUCE-5663.patch.txt3
>
>
> 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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