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From "Harsh J (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-2124) Namenode HA using Backup Namenode as Hot Standby
Date Fri, 08 Feb 2013 08:07:16 GMT

    [ https://issues.apache.org/jira/browse/HDFS-2124?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13574310#comment-13574310
] 

Harsh J commented on HDFS-2124:
-------------------------------

Hi Justin,

Are you still working on this? Is it an alternative approach to what's already present (Shared
edits storage types)?

If not, can we resolve this given we already have 'Hot' Standby NameNode roles today for HA
that do function as designed?
                
> Namenode HA using Backup Namenode as Hot Standby
> ------------------------------------------------
>
>                 Key: HDFS-2124
>                 URL: https://issues.apache.org/jira/browse/HDFS-2124
>             Project: Hadoop HDFS
>          Issue Type: New Feature
>          Components: datanode, hdfs-client, namenode
>    Affects Versions: 0.20.2, 0.21.0
>            Reporter: Justin Joseph
>         Attachments: Namenode HA using Backup Namenode as Hot Standby.pdf
>
>
> This is to share our experiences on building Automatic, Hot High Availability for Namenode,
leveraging the existing Backup Namenode.

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