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Posted to hdfs-issues@hadoop.apache.org by "Brahma Reddy Battula (JIRA)" <ji...@apache.org> on 2015/04/16 17:23:59 UTC

[jira] [Created] (HDFS-8161) Both Namenodes are in standby State

Brahma Reddy Battula created HDFS-8161:
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             Summary: Both Namenodes are in standby State
                 Key: HDFS-8161
                 URL: https://issues.apache.org/jira/browse/HDFS-8161
             Project: Hadoop HDFS
          Issue Type: Bug
            Reporter: Brahma Reddy Battula
            Assignee: Brahma Reddy Battula


Scenario:
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Start cluster with three Nodes.
Reboot Machine where ZKFC is not running..( Here Active Node ZKFC should open session with this ZK )

Now  ZKFC ( Active NN's ) session expire and try re-establish connection with another ZK...Bythe time  ZKFC ( StndBy NN's ) will try to fence old active and create the active Breadcrumb and Makes SNN to active state..

But immediately it fence to standby state.. ( Here is the doubt)

Hence both will be in standby state..



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