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From "Ajay Kumar (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-12420) Add an option to disallow 'namenode format -force'
Date Tue, 26 Sep 2017 17:44:00 GMT

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

Ajay Kumar updated HDFS-12420:
------------------------------
    Attachment: HDFS-12420.11.patch

Removed unused imports to fix checkstyle issues. Fixed TestClusterId test case. Other two
are unrelated.

> 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
>
>
> 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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