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From "Vinod Kumar Vavilapalli (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-5157) Sort in hadoop-1 examples is not binary compatible with hadoop-2 mapred.lib
Date Wed, 08 May 2013 18:05:17 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-5157?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13652144#comment-13652144
] 

Vinod Kumar Vavilapalli commented on MAPREDUCE-5157:
----------------------------------------------------

Oh and I suppose, with the latest patch, branch-1 sorter works against hadoop-2, right?
                
> Sort in hadoop-1 examples is not binary compatible with hadoop-2 mapred.lib
> ---------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-5157
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-5157
>             Project: Hadoop Map/Reduce
>          Issue Type: Sub-task
>            Reporter: Zhijie Shen
>            Assignee: Zhijie Shen
>         Attachments: MAPREDUCE-5157.1.patch, MAPREDUCE-5157.1.patch
>
>
> In SORT example, org.apache.hadoop.mapred.lib.InputSampler.Sampler is used in hadoop-1.
However, after upgrading to hadoop-2, org.apache.hadoop.mapred.lib.InputSampler is modified
to extend org.apache.hadoop.mapreduce.lib.partition.InputSampler, and the inner class, Sampler,
has been moved to the superclass. Therefore, hadoop-1 SORT can not find Sampler when it runs
with hadoop-2 framework.

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