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