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https://issues.apache.org/jira/browse/HDFS-5147?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13983998#comment-13983998
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Sanghyun Yun commented on HDFS-5147:
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hdfs dfsadmin -safemode enter
This command's result is first namenode(it doesn't matter that active) status
changes to safemode. I think should be changed active namenode or both.
hdfs dfsadmin -fs hdfs://CLUSTERNAME -safemode enter
This command's result is same.
Is it correct?
I performed in r2.2.0
> Certain dfsadmin commands such as safemode do not interact with the active
> namenode in ha setup
> -----------------------------------------------------------------------------------------------
>
> Key: HDFS-5147
> URL: https://issues.apache.org/jira/browse/HDFS-5147
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: ha
> Affects Versions: 2.1.0-beta
> Reporter: Arpit Gupta
> Assignee: Jing Zhao
>
> There are certain commands in dfsadmin return the status of the first
> namenode specified in the configs rather than interacting with the active
> namenode
> For example. Issue
> hdfs dfsadmin -safemode get
> and it will return the status of the first namenode in the configs rather
> than the active namenode.
> I think all dfsadmin commands should determine which is the active namenode
> do the operation on it.
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