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From "Eli Collins (Updated) (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HADOOP-7938) HA: the FailoverController should optionally fence the active during failover
Date Mon, 30 Jan 2012 04:27:10 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-7938?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Eli Collins updated HADOOP-7938:
--------------------------------

    Attachment: hadoop-7938.txt

Patched rebased on the tip of branch post HDFS-2841.
                
> HA: the FailoverController should optionally fence the active during failover
> -----------------------------------------------------------------------------
>
>                 Key: HADOOP-7938
>                 URL: https://issues.apache.org/jira/browse/HADOOP-7938
>             Project: Hadoop Common
>          Issue Type: Sub-task
>          Components: ha
>    Affects Versions: HA Branch (HDFS-1623)
>            Reporter: Eli Collins
>            Assignee: Eli Collins
>             Fix For: HA Branch (HDFS-1623)
>
>         Attachments: hadoop-7938.txt, hadoop-7938.txt, hadoop-7938.txt, hadoop-7938.txt
>
>
> The FailoverController in HADOOP-7924 needs to be able to fence off the current active
in case it fails to transition to standby (or the user requests it for sanity). This is needed
even for manual failover (the CLI should use the configured fencing mechanism). The FC needs
to access the HDFS-specific implementations HDFS-2179, could add a common fencing interface
(or just shell out but we may not always want to do that).

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