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https://issues.apache.org/jira/browse/HDFS-14269?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16766674#comment-16766674
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Wei-Chiu Chuang commented on HDFS-14269:
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Ah thanks. You're right. In my environment, Cloudera Manager takes care of the
transitioning for typical HA scenario, so I forgot this is the standard startup
procedure.
> [SBN read] Observer node switches back to Standby after restart
> ---------------------------------------------------------------
>
> Key: HDFS-14269
> URL: https://issues.apache.org/jira/browse/HDFS-14269
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: namenode
> Affects Versions: 3.3.0
> Reporter: Wei-Chiu Chuang
> Priority: Major
>
> The Observer state is not persistent. Once it restarts it becomes Standby
> node again. Since it does not participate in NameNode failover for now,
> should we assume an Observer node is always an Observer node? This state
> should be persisted somewhere, like in Zookeeper.
> CC: [~csun] [~shv]. Like to get inputs from you. Have you discussed this
> before?
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