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Posted to common-issues@hadoop.apache.org by "Robert Chansler (JIRA)" <ji...@apache.org> on 2009/09/25 23:35:16 UTC

[jira] Updated: (HADOOP-5258) Provide dfsadmin functionality to report on namenode's view of network topology

     [ https://issues.apache.org/jira/browse/HADOOP-5258?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Robert Chansler updated HADOOP-5258:
------------------------------------

    Release Note: New dfsAdmin command -printTopology shows topology as understood by the namenode.  (was: -printTopology added to dfsAdmin to print a tree of the rack and datanode topology as seen by the namenode.)

Editorial pass over all release notes prior to publication of 0.21.

> Provide dfsadmin functionality to report on namenode's view of network topology
> -------------------------------------------------------------------------------
>
>                 Key: HADOOP-5258
>                 URL: https://issues.apache.org/jira/browse/HADOOP-5258
>             Project: Hadoop Common
>          Issue Type: New Feature
>            Reporter: Jakob Homan
>            Assignee: Jakob Homan
>             Fix For: 0.21.0
>
>         Attachments: HADOOP-5258.patch, HADOOP-5258.patch, HADOOP-5258.patch, HADOOP-5258.patch
>
>
> As discussed in HADOOP-4954, it would be useful to be able to query the namenode to its current view on the network topology of racks and datanodes.  This would allow ops to compare what the namenode sees with what they expect it to see.  

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