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https://issues.apache.org/jira/browse/HADOOP-8727?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13442220#comment-13442220
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Eli Collins commented on HADOOP-8727:
-------------------------------------
Why not use Configuration#addDeprecation?
> Gracefully deprecate dfs.umaskmode in 2.x onwards
> -------------------------------------------------
>
> Key: HADOOP-8727
> URL: https://issues.apache.org/jira/browse/HADOOP-8727
> Project: Hadoop Common
> Issue Type: Bug
> Components: conf
> Affects Versions: 2.0.0-alpha
> Reporter: Harsh J
> Assignee: Harsh J
> Attachments: HADOOP-8727.patch
>
>
> While HADOOP-6234 added dfs.umaskmode in 0.21.0, the subsequent HADOOP-6233
> simply renamed it, again in 0.21.0, without any deprecation mechanism
> (understandable).
> However, 1.x now carries dfs.umaskmode but there isn't a graceful deprecation
> when one upgrades to 2.x. We should recreate this prop and add it to the
> deprecated list.
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