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From "Akira AJISAKA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-6583) Clarify confusing sentence in MapReduce tutorial document
Date Mon, 28 Dec 2015 06:04:49 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-6583?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15072462#comment-15072462
] 

Akira AJISAKA commented on MAPREDUCE-6583:
------------------------------------------

Thanks [~mzuehlke] for filing and fixing it!

> Clarify confusing sentence in MapReduce tutorial document
> ---------------------------------------------------------
>
>                 Key: MAPREDUCE-6583
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-6583
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: documentation
>            Reporter: chris snow
>            Assignee: Kai Sasaki
>            Priority: Minor
>             Fix For: 2.8.0, 2.7.3
>
>         Attachments: HADOOP-12466.01.patch
>
>
> The current MapReduce tutorial has the following statement which is confusing:
> {quote}
> Overall, Mapper implementations are passed the Job for the job via the Job.setMapperClass(Class)
method.
> {quote}
> The sentence seems to contradict itself.   The code shows the mapper getting passed to
the job.  However, the working suggests that the job is passed to the mapper?
> https://hadoop.apache.org/docs/current/hadoop-mapreduce-client/hadoop-mapreduce-client-core/MapReduceTutorial.html#Mapper



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