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https://issues.apache.org/jira/browse/HDFS-12420?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ajay Kumar reassigned HDFS-12420:
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Assignee: (was: Ajay Kumar)
> Disable Namenode format when data already exist
> -----------------------------------------------
>
> Key: HDFS-12420
> URL: https://issues.apache.org/jira/browse/HDFS-12420
> Project: Hadoop HDFS
> Issue Type: Improvement
> Reporter: Ajay Kumar
>
> While Formatting NameNode user should be informed that this will result in
> complete loss of data. In addition to current message we should display:
> "This will result in complete loss of all cluster data."
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