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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 Tue, 03 Oct 2017 22:28:00 GMT

    [ https://issues.apache.org/jira/browse/HDFS-12420?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16190485#comment-16190485
] 

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

[~arpitagarwal], thanks for retriggering jenkins build. 4 failed test cases are unrelated
as they pass locally. 

> 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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