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https://issues.apache.org/jira/browse/HDFS-14067?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16695131#comment-16695131
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Konstantin Shvachko edited comment on HDFS-14067 at 11/21/18 7:04 PM:
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Hi [~xiangheng]. If I understood correctly [your
comment|https://issues.apache.org/jira/browse/HDFS-12943?focusedCommentId=16689105&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-16689105]
on HDFS-12943, you are saying the latest patch here didn't work for you. Could
you please explain why and how. If you have a test it would be perfect.
was (Author: shv):
Hi @xiangheng. If I understood correctly [your
comment|https://issues.apache.org/jira/browse/HDFS-12943?focusedCommentId=16689105&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-16689105]
on HDFS-12943, you are saying the latest patch here didn't work for you. Could
you please explain why and how. If you have a test it would be perfect.
> Allow manual failover between standby and observer
> --------------------------------------------------
>
> Key: HDFS-14067
> URL: https://issues.apache.org/jira/browse/HDFS-14067
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Reporter: Chao Sun
> Assignee: Chao Sun
> Priority: Major
> Attachments: HDFS-14067-HDFS-12943.000.patch,
> HDFS-14067-HDFS-12943.001.patch
>
>
> Currently if automatic failover is enabled in a HA environment, transition
> from standby to observer would be blocked:
> {code}
> [hdfs@*** hadoop-3.3.0-SNAPSHOT]$ bin/hdfs haadmin -transitionToObserver ha2
> Automatic failover is enabled for NameNode at ****
> Refusing to manually manage HA state, since it may cause
> a split-brain scenario or other incorrect state.
> If you are very sure you know what you are doing, please
> specify the --forcemanual flag.
> {code}
> We should allow manual transition between standby and observer in this case.
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