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Date: Mon, 16 May 2011 21:20:47 +0000 (UTC)
From: "Bharath Mundlapudi (JIRA)" <jira@apache.org>
To: hdfs-issues@hadoop.apache.org
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Subject: [jira] [Commented] (HDFS-1905) Improve the usability of namenode
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    [ https://issues.apache.org/jira/browse/HDFS-1905?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13034320#comment-13034320 ] 

Bharath Mundlapudi commented on HDFS-1905:
------------------------------------------

For Comment 2: Lets say that, i want to format a namenode which is part of a particular cluster. Reusing the cluster id is useful here - I just want to format this namenode and also want it to be part of same cluster.


> Improve the usability of namenode -format 
> ------------------------------------------
>
>                 Key: HDFS-1905
>                 URL: https://issues.apache.org/jira/browse/HDFS-1905
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: name-node
>    Affects Versions: 0.23.0
>            Reporter: Bharath Mundlapudi
>            Assignee: Bharath Mundlapudi
>            Priority: Minor
>             Fix For: 0.23.0
>
>         Attachments: HDFS-1905-1.patch
>
>
> While setting up 0.23 version based cluster, i ran into this issue. When i issue a format namenode command, which got changed in 23, it should let the user know to how to use this command in case where complete options were not specified.
> ./hdfs namenode -format
> I get the following error msg, still its not clear what and how user should use this command.
> 11/05/09 15:36:25 ERROR namenode.NameNode: java.lang.IllegalArgumentException: Format must be provided with clusterid
> 	at org.apache.hadoop.hdfs.server.namenode.NameNode.format(NameNode.java:1483)
> 	at org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1623)
> 	at org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1689)
>  
> The usability of this command can be improved.

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