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https://issues.apache.org/jira/browse/HADOOP-8279?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13266060#comment-13266060
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Hari Mankude commented on HADOOP-8279:
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Todd,
Is the feature going to switch the active NN to standby state or will it result
in active NN getting fenced and hence going away?
thanks
> Auto-HA: Allow manual failover to be invoked from zkfc.
> -------------------------------------------------------
>
> Key: HADOOP-8279
> URL: https://issues.apache.org/jira/browse/HADOOP-8279
> Project: Hadoop Common
> Issue Type: Improvement
> Components: auto-failover, ha
> Affects Versions: Auto Failover (HDFS-3042)
> Reporter: Mingjie Lai
> Assignee: Todd Lipcon
> Fix For: Auto Failover (HDFS-3042)
>
> Attachments: hadoop-8279.txt, hadoop-8279.txt, hadoop-8279.txt,
> hadoop-8279.txt
>
>
> HADOOP-8247 introduces a configure flag to prevent potential status
> inconsistency between zkfc and namenode, by making auto and manual failover
> mutually exclusive.
> However, as described in 2.7.2 section of design doc at HDFS-2185, we should
> allow manual and auto failover co-exist, by:
> - adding some rpc interfaces at zkfc
> - manual failover shall be triggered by haadmin, and handled by zkfc if auto
> failover is enabled.
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