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From "Justin Joseph (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-2164) Namenode supports Active and Standby modes; Standby Namenode should be able to able to take up the Active role dynamically, without losing any data.
Date Tue, 19 Jul 2011 12:03:58 GMT
Namenode supports Active and Standby modes; Standby Namenode should be able to able to take
up the Active role dynamically, without losing any data.
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                 Key: HDFS-2164
                 URL: https://issues.apache.org/jira/browse/HDFS-2164
             Project: Hadoop HDFS
          Issue Type: Sub-task
            Reporter: Justin Joseph


Namenode should have the capability to play dual roles, either as Active or Standby, as HA
Agent decides. The Standby Namenode should contain the instance of Backup Namenode inside.
When HA Agent forces a switch over, the Backup Namenode instance should be turned to a normal
Namenode instance.

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