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https://issues.apache.org/jira/browse/HDFS-14998?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16986832#comment-16986832
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Fei Hui commented on HDFS-14998:
--------------------------------
[~csun] [~ayushtkn] Thanks for your comments.
{quote}
With ZKFC running in both hosts, user just need to run the DFS admin commands
to achieve that.
{quote}
*Without* ZKFC running, user could also run the DFS admin commands to achieve
that(transition an observer to standby or transition a standby to observer).Is
it right?
The only benefit for running ZKFC on Observer NameNode is that it would join
election when the Observer NameNode is transitioned to Standby state.
>From your words dynamic transition(between observer and standby) can be done
>only when ZKFC running on it. But i think dynamic transition can be done
>without ZKFC running. Please correct me, thanks.
> Update Observer Namenode doc for ZKFC after HDFS-14130
> ------------------------------------------------------
>
> Key: HDFS-14998
> URL: https://issues.apache.org/jira/browse/HDFS-14998
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: documentation
> Affects Versions: 3.3.0
> Reporter: Fei Hui
> Assignee: Fei Hui
> Priority: Minor
> Attachments: HDFS-14998.001.patch, HDFS-14998.002.patch,
> HDFS-14998.003.patch
>
>
> After HDFS-14130, we should update observer namenode doc, observer namenode
> can run with ZKFC running
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