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https://issues.apache.org/jira/browse/HDFS-2141?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13066249#comment-13066249
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Aaron T. Myers commented on HDFS-2141:
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+1, this patch looks good to me. If you care to, you might want to line up the
indentation of ("NameNode") with the other members of {{NameNodeRole}}, but no
reason to make another patch for it.
We might even consider merging {{HdfsConstants.NodeType}} and
{{HdfsConstants.NameNodeRole}}, since being a DN is certainly mutually
exclusive with all of the {{NameNodeRoles}}, but that should probably be done
as a separate JIRA.
> Remove NameNode roles Active and Standby
> ----------------------------------------
>
> Key: HDFS-2141
> URL: https://issues.apache.org/jira/browse/HDFS-2141
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: name-node
> Reporter: Suresh Srinivas
> Assignee: Suresh Srinivas
> Attachments: HDFS-2141.patch
>
>
> In HDFS, following roles are supported in NameNodeRole: ACTIVE, BACKUP,
> CHECKPOINT and STANDBY.
> Active and Standby are the state of the NameNode. While Backup and CheckPoint
> are the name/role of the daemons that are started. This mixes up the run time
> state of NameNode with the daemon role. I propose changing the NameNodeRole
> to: NAMENODE, BACKUP, CHECKPOINT. HDFS-1974 will introduce the states active
> and standby to the daemon that is running in the role NAMENODE.
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