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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: Disallow 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.)
> Disable Namenode format when data already exists
> ------------------------------------------------
>
> Key: HDFS-12420
> URL: https://issues.apache.org/jira/browse/HDFS-12420
> Project: Hadoop HDFS
> Issue Type: Improvement
> Reporter: Ajay Kumar
> Assignee: Ajay Kumar
> Attachments: HDFS-12420.01.patch
>
>
> 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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