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From "Suresh Srinivas (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-2141) Remove NameNode roles Active and Standby
Date Tue, 19 Jul 2011 00:10:57 GMT

     [ https://issues.apache.org/jira/browse/HDFS-2141?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Suresh Srinivas updated HDFS-2141:
----------------------------------

    Attachment: HDFS-2141.1.patch

> But note that this patch doesn't change the description (and thus the result of NamenodeRole.toString())
for NamenodeRole.ACTIVE. So, the metrics should be unaffected from a user's point of view,
correct?
Hmm for some reason I thought it had ACTIVE before. You are right.

I have attached new patch with indentation change. If you +1 it, I will commit it on Hudson
validation.

> 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
>             Fix For: 0.23.0
>
>         Attachments: HDFS-2141.1.patch, 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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