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Date: Thu, 5 Apr 2012 23:28:24 +0000 (UTC)
From: "Suresh Srinivas (Commented) (JIRA)" <jira@apache.org>
To: hdfs-issues@hadoop.apache.org
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Subject: [jira] [Commented] (HDFS-3211) JournalProtocol changes required for
 introducing epoch and fencing
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    [ https://issues.apache.org/jira/browse/HDFS-3211?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13247838#comment-13247838 ] 

Suresh Srinivas commented on HDFS-3211:
---------------------------------------

Created HDFS-3212 for persisting epoch.
                
> JournalProtocol changes required for introducing epoch and fencing
> ------------------------------------------------------------------
>
>                 Key: HDFS-3211
>                 URL: https://issues.apache.org/jira/browse/HDFS-3211
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: ha, name-node
>    Affects Versions: Shared journals (HDFS-3092)
>            Reporter: Suresh Srinivas
>            Assignee: Suresh Srinivas
>         Attachments: HDFS-3211.txt, HDFS-3211.txt
>
>
> JournalProtocol changes to introduce epoch in every request. Adding new method fence for fencing a JournalService. On BackupNode fence is a no-op. 

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