Chao Sun created HDFS-14067:
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Summary: 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
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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