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From "Vinod Kumar Vavilapalli (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-5275) Mapreduce API: TokenCache incompatibility issues with MR1
Date Fri, 31 May 2013 00:24:20 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-5275?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13670999#comment-13670999
] 

Vinod Kumar Vavilapalli commented on MAPREDUCE-5275:
----------------------------------------------------

I think the changes to loadTokens will breaking binary compatibility. Why not just add a new
method which calls the existing method?
                
> Mapreduce API: TokenCache incompatibility issues with MR1
> ---------------------------------------------------------
>
>                 Key: MAPREDUCE-5275
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-5275
>             Project: Hadoop Map/Reduce
>          Issue Type: Sub-task
>            Reporter: Zhijie Shen
>            Assignee: Mayank Bansal
>         Attachments: MAPREDUCE-5275-trunk-1.patch, MAPREDUCE-5275-trunk-2.patch
>
>
> There're following incompatibility issues:
> * Token<DelegationTokenIdentifier> getDelegationToken(Credentials, String) is removed
> * Credentials loadTokens(String, Configuration) changes to Credentials loadTokens(String,
JobConf)

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