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From "Allen Wittenauer (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-1811) Create scripts to decommission datanodes
Date Wed, 06 Apr 2011 00:14:05 GMT

    [ https://issues.apache.org/jira/browse/HDFS-1811?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13016192#comment-13016192
] 

Allen Wittenauer commented on HDFS-1811:
----------------------------------------

If only we had a distributed configuration system....  

I'm guessing this is actually for Federated branch?  This doesn't seem necessary for a single/dual
NN config.

> Create scripts to decommission datanodes
> ----------------------------------------
>
>                 Key: HDFS-1811
>                 URL: https://issues.apache.org/jira/browse/HDFS-1811
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>            Reporter: Owen O'Malley
>            Assignee: Erik Steffl
>
> Create scripts to decommission datanodes:
>   - distribute exclude file
>     - input is location of exclude file
>     - location on namenodes: hdfs getconf -excludeFile
>     - list of namenodes: hdfs getconf -namenodes
>     - scp excludes files to all namenodes
>   - refresh namenodes
>     - list of namenodes: hdfs getconf -namenodes
>     - refresh namenodes: hdfs dfsadmin -refreshNodes
> Two scripts are needed because each of them might require different permissions.

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