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From "Tom White (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (MAPREDUCE-4148) MapReduce should not have a compile-time dependency on HDFS
Date Fri, 04 May 2012 00:24:48 GMT

     [ https://issues.apache.org/jira/browse/MAPREDUCE-4148?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Tom White updated MAPREDUCE-4148:
---------------------------------

    Attachment: MAPREDUCE-4148.patch

I've reworked the patch to use a service loader, and also to address Daryn's feedback. There
is now a decodeIdentifier() method on Token, which is better than my original approach. The
only thing I didn't change is the use of ReflectionUtils, since it's a convenient, centralized
way to construct an object, and it handles the exceptions in a uniform way.

(I suspect test-patch will fail due to HADOOP-8354.)
                
> MapReduce should not have a compile-time dependency on HDFS
> -----------------------------------------------------------
>
>                 Key: MAPREDUCE-4148
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-4148
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>            Reporter: Tom White
>            Assignee: Tom White
>         Attachments: MAPREDUCE-4148.patch, MAPREDUCE-4148.patch, MAPREDUCE-4148.patch
>
>
> MapReduce depends on HDFS's DelegationTokenIdentifier (for printing token debug information).
We should remove this dependency and MapReduce's compile-time dependency on HDFS.

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