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From "Jitendra Nath Pandey (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HDFS-531) Renaming of configuration keys
Date Thu, 06 Aug 2009 20:33:14 GMT

    [ https://issues.apache.org/jira/browse/HDFS-531?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12740239#action_12740239

Jitendra Nath Pandey commented on HDFS-531:

Yes, backward compatibility will be maintained. 
We are planning to use backward compatibility mechanism proposed in following jira -    

> Renaming of configuration keys
> ------------------------------
>                 Key: HDFS-531
>                 URL: https://issues.apache.org/jira/browse/HDFS-531
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>            Reporter: Jitendra Nath Pandey
>            Assignee: Jitendra Nath Pandey
>             Fix For: 0.21.0
> Keys in configuration files should be standardized so that key names reflect the components
they are used in.
> For example:
>    dfs.backup.address should be renamed to dfs.namenode.backup.address 
>    dfs.data.dir   should be renamed to dfs.datanode.data.dir
> This change will impact both hdfs and common sources.
> Following convention is proposed:
> 1. Any key related hdfs should begin with 'dfs'.
> 2. Any key related to namenode, datanode or client should begin with dfs.namenode, dfs.datanode
or dfs.client respectively.  

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