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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 updated HDFS-12420:
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Description: Disable NameNode format to avoid accidental formatting of
Namenode in production cluster. If someone really wants to delete the complete
fsImage they can first delete the metadata dir and then run {code} hdfs
namenode -format{code} manually. (was: 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.")
> 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
>
> Disable NameNode format to avoid accidental formatting of Namenode in
> production cluster. If someone really wants to delete the complete fsImage
> they can first delete the metadata dir and then run {code} hdfs namenode
> -format{code} manually.
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