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From "Ajay Kumar (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-12420) Add an option to disallow 'namenode format -force'
Date Fri, 06 Oct 2017 00:03:00 GMT

    [ https://issues.apache.org/jira/browse/HDFS-12420?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16193948#comment-16193948
] 

Ajay Kumar commented on HDFS-12420:
-----------------------------------

[~arpitagarwal] thanks for review and commit. [~shahrs87],[~daryn],[~aw],[~vagarychen],[~anu],[~vinayrpet],[~kihwal]
thanks for review and valuable feedback.

> Add an option to disallow 'namenode format -force'
> --------------------------------------------------
>
>                 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, HDFS-12420.09.patch,
HDFS-12420.10.patch, HDFS-12420.11.patch, HDFS-12420.12.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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