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Posted to mapreduce-issues@hadoop.apache.org by "Hudson (JIRA)" <ji...@apache.org> on 2011/04/07 17:42:09 UTC

[jira] [Commented] (MAPREDUCE-1242) Chain APIs error misleading

    [ https://issues.apache.org/jira/browse/MAPREDUCE-1242?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13016881#comment-13016881 ] 

Hudson commented on MAPREDUCE-1242:
-----------------------------------

Integrated in Hadoop-Mapreduce-trunk #643 (See [https://hudson.apache.org/hudson/job/Hadoop-Mapreduce-trunk/643/])
    

> Chain APIs error misleading
> ---------------------------
>
>                 Key: MAPREDUCE-1242
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-1242
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>    Affects Versions: 0.20.2
>            Reporter: Amogh Vasekar
>            Assignee: Harsh J Chouraria
>            Priority: Trivial
>             Fix For: 0.23.0
>
>         Attachments: MAPREDUCE-1242.patch, MAPREDUCE-1242.r2.patch
>
>
> Hi,
> I was using the Chain[Mapper/Reducer] APIs , and in Class Chain line 207 the error thrown : 
> "The Mapper output key class does not match the previous Mapper input key class"
> Shouldn't this be "The Mapper *input* key class does not match the previous Mapper *Output* key class" ? Sort of misleads :) 

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