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From "Allen Wittenauer (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-2830) Document config parameters for each Map-Reduce class/interface
Date Thu, 17 Jul 2014 18:19:12 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-2830?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14065280#comment-14065280
] 

Allen Wittenauer commented on MAPREDUCE-2830:
---------------------------------------------

Ping!

> Document config parameters for each Map-Reduce class/interface
> --------------------------------------------------------------
>
>                 Key: MAPREDUCE-2830
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-2830
>             Project: Hadoop Map/Reduce
>          Issue Type: Improvement
>          Components: documentation
>            Reporter: Arun C Murthy
>              Labels: newbie
>
> I propose we add a table in the javadoc for each user-facing Map-Reduce interface/class
which lists, and provides details, of each and every config parameter which has any bearing
on that interface/class. Clearly some parameters affect more than one place and they should
be put in more than one table.
> For e.g. 
> Mapper -> io.sort.mb, io.sort.factor
> Reducer -> fs.inmemory.size.mb
> ...
> etc.
> It would very nice to explain how it interacts with the framework and rest of config
params etc.
> Thoughts?



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