hadoop-hdfs-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
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 18:25:00 GMT

    [ https://issues.apache.org/jira/browse/HDFS-12420?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16168303#comment-16168303
] 

Ajay Kumar edited comment on HDFS-12420 at 9/15/17 6:24 PM:
------------------------------------------------------------

[~shahrs87], [~daryn],[~kihwal] Thanks for review and feedback. I have changed property to
{{"hdfs.reformat.enabled"=true}}
 and moved it to DFSConfigKeys. By default property is set to true, which will ensure existing
behavior continues unless someone disables reformat.


was (Author: ajayydv):
[~shahrs87], [~daryn],[~kihwal] Thanks for review and feedback. I have changed property to
{noformat} "hdfs.reformat.enabled"=true {noformat}
 and moved it to DFSConfigKeys. By default property is set to true, which will ensure existing
behavior continues unless someone disables reformat.

> 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
>
>
> 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.



--
This message was sent by Atlassian JIRA
(v6.4.14#64029)

---------------------------------------------------------------------
To unsubscribe, e-mail: hdfs-issues-unsubscribe@hadoop.apache.org
For additional commands, e-mail: hdfs-issues-help@hadoop.apache.org


Mime
View raw message