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From "Ajay Kumar (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-12420) Disable Namenode format when data already exists
Date Tue, 12 Sep 2017 03:03:00 GMT

     [ https://issues.apache.org/jira/browse/HDFS-12420?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Ajay Kumar updated HDFS-12420:
------------------------------
    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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