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From "Konstantin Shvachko (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-2064) Warm HA NameNode going Hot
Date Thu, 18 Oct 2012 04:00:07 GMT

    [ https://issues.apache.org/jira/browse/HDFS-2064?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13478637#comment-13478637
] 

Konstantin Shvachko commented on HDFS-2064:
-------------------------------------------

I think this jira still makes sense. I'll close it when I see it doesn't.
                
> Warm HA NameNode going Hot
> --------------------------
>
>                 Key: HDFS-2064
>                 URL: https://issues.apache.org/jira/browse/HDFS-2064
>             Project: Hadoop HDFS
>          Issue Type: New Feature
>          Components: name-node
>    Affects Versions: 0.22.0
>            Reporter: Konstantin Shvachko
>            Assignee: Konstantin Shvachko
>         Attachments: failover-v-0.22.patch, failover-v-0.22.patch, WarmHA-GoingHot.pdf
>
>
> This is the design for automatic hot HA for HDFS NameNode. It involves use of HA software
and LoadReplicator - external to Hadoop components, which substantially simplify the architecture
by separating HA- from Hadoop-specific problems. Without the external components it provides
warm standby with manual failover.

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