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https://issues.apache.org/jira/browse/HDFS-1636?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13030383#comment-13030383
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Aaron T. Myers commented on HDFS-1636:
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Hey Harsh, a test case is always strongly encouraged, especially when it's an
easy test case to write like this would be.
> If dfs.name.dir points to an empty dir, namenode format shouldn't require
> confirmation
> --------------------------------------------------------------------------------------
>
> Key: HDFS-1636
> URL: https://issues.apache.org/jira/browse/HDFS-1636
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: name-node
> Affects Versions: 0.23.0
> Reporter: Todd Lipcon
> Assignee: Harsh J Chouraria
> Priority: Minor
> Attachments: HDFS-1636.r1.diff
>
>
> Right now, running namenode -format when dfs.name.dir is configured to a dir
> which exists but is empty still asks for confirmation. This is unnecessary
> since it isn't blowing away any real data.
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