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https://issues.apache.org/jira/browse/HADOOP-7938?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Eli Collins updated HADOOP-7938:
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Attachment: hadoop-7938.txt
Patch attached. Aside from the tests, manually failed over with fencing via
hadadmin using sshfence.
Will file a jira for passing fromSvc as an argument to the fencing script
instead of relying on it being configured, and for being able to use logical
dfs.ha.namenode.id instead of rpc addrs.
> 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
>
>
> 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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