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https://issues.apache.org/jira/browse/HDFS-531?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12740226#action_12740226
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Koji Noguchi commented on HDFS-531:
-----------------------------------
Are we going to keep backward compatibility with 'deprecated' warning for at
least one version?
> 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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