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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: Support for disabling 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: 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.)
> Disable Namenode format for prod clusters 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, HDFS-12420.02.patch,
> HDFS-12420.03.patch, HDFS-12420.04.patch, HDFS-12420.05.patch,
> HDFS-12420.06.patch, HDFS-12420.07.patch, HDFS-12420.08.patch
>
>
> Support for disabling 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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