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Posted to hdfs-dev@hadoop.apache.org by "Wei-Chiu Chuang (JIRA)" <ji...@apache.org> on 2019/02/13 02:27:00 UTC
[jira] [Resolved] (HDFS-14269) [SBN read] Observer node switches
back to Standby after restart
[ https://issues.apache.org/jira/browse/HDFS-14269?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Wei-Chiu Chuang resolved HDFS-14269.
------------------------------------
Resolution: Won't Fix
> [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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