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From "Ajay Kumar (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (HDFS-12420) Disable Namenode format for prod clusters when data already exists
Date Fri, 15 Sep 2017 21:31:03 GMT

    [ https://issues.apache.org/jira/browse/HDFS-12420?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16168500#comment-16168500
] 

Ajay Kumar edited comment on HDFS-12420 at 9/15/17 9:30 PM:
------------------------------------------------------------

fixed jenkins issues.


was (Author: ajayydv):
fixing jenkins issues.

> Disable Namenode format for prod clusters 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, HDFS-12420.02.patch, HDFS-12420.03.patch, HDFS-12420.04.patch,
HDFS-12420.05.patch, HDFS-12420.06.patch, HDFS-12420.07.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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