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From "Todd Lipcon (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (HDFS-3278) Umbrella Jira for HDFS-HA Phase 2
Date Wed, 14 May 2014 17:09:18 GMT

     [ https://issues.apache.org/jira/browse/HDFS-3278?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Todd Lipcon resolved HDFS-3278.
-------------------------------

       Resolution: Fixed
    Fix Version/s: 2.1.0-beta
         Assignee: Todd Lipcon  (was: Sanjay Radia)

These subtasks were completed quite a while back.

> Umbrella Jira for HDFS-HA Phase 2
> ---------------------------------
>
>                 Key: HDFS-3278
>                 URL: https://issues.apache.org/jira/browse/HDFS-3278
>             Project: Hadoop HDFS
>          Issue Type: New Feature
>            Reporter: Sanjay Radia
>            Assignee: Todd Lipcon
>             Fix For: 2.1.0-beta
>
>
> HDFS-1623 gives a high level architecture and design for hot automatic failover of the
NN. Branch HDFS-1623 was merged into trunk for tactical reasons even though the work for HA
was not complete, Branch HDFS-1623 contained mechanisms for keeping a standby Hot (ie read
from shared journal), dual block reports, fencing of DNs, Zookeeper library for leader election
etc. This Umbrella jira covers the remaining work for HA and will link all the jiras for the
remaining work. Unlike HDFS-1623 no single branch will be created - work will proceed in parallel
branches.



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