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From "Sanjay Radia (Created) (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-3278) Umbrella Jira for HDFS-HA Phase 2
Date Fri, 13 Apr 2012 23:45:17 GMT
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: Sanjay Radia


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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