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From "Junping Du (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-12420) Add an option to disallow 'namenode format -force'
Date Thu, 19 Oct 2017 00:39:04 GMT

    [ https://issues.apache.org/jira/browse/HDFS-12420?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16210386#comment-16210386
] 

Junping Du commented on HDFS-12420:
-----------------------------------

Drop 2.8.2 from fix version as the patch only commit to branch-2.8 instead of branch-2.8.2.

> 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
>             Fix For: 2.9.0, 2.8.3, 2.7.5, 3.0.0, 3.1.0
>
>         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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