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From "Arun C Murthy (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAPREDUCE-849) Renaming of configuration property names in mapreduce
Date Tue, 24 May 2011 21:18:47 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-849?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13038793#comment-13038793
] 

Arun C Murthy commented on MAPREDUCE-849:
-----------------------------------------

Ok, this patch has a big problem.

Well, not the patch.

The crux is that we shouldn't have added the new config knobs to mapred-default.xml. Configuration
is setup to look for new config knobs when old ones are used, which is fine. However, the
new config knobs take precedence over old ones and by setting new ones in mapred-default.xml
the old ones are never found...

> Renaming of configuration property names in mapreduce
> -----------------------------------------------------
>
>                 Key: MAPREDUCE-849
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-849
>             Project: Hadoop Map/Reduce
>          Issue Type: Improvement
>            Reporter: Amareshwari Sriramadasu
>            Assignee: Amareshwari Sriramadasu
>             Fix For: 0.21.0
>
>         Attachments: Config changes.xls, Config changes.xls, patch-849-1.txt, patch-849-2.txt,
patch-849-3.txt, patch-849.txt
>
>
> In-line with HDFS-531, property names in configuration files should be standardized in
MAPREDUCE. 

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