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From "Joep Rottinghuis (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-6616) Improve documentation for rack awareness
Date Sat, 06 Oct 2012 02:04:03 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-6616?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13470862#comment-13470862

Joep Rottinghuis commented on HADOOP-6616:

Nice Adam. Nit int the second-last paragraph:
If neither <code>topology.script.file.name</code> or <code>topology.script.file.name</code>
not set, the rack id '/default-rack' is returned for any passed IP address. 
Neither not is a double negative.
You mention the property topology.script.file.name twice. Did you mean the following?
If neither <code>topology.script.file.name</code> nor <code>topology.node.switch.mapping.impl</code>
is set, the rack id '/default-rack' is returned for any passed IP address. 

> Improve documentation for rack awareness
> ----------------------------------------
>                 Key: HADOOP-6616
>                 URL: https://issues.apache.org/jira/browse/HADOOP-6616
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: documentation
>            Reporter: Jeff Hammerbacher
>              Labels: newbie
>         Attachments: hadoop-6616.patch
> The current documentation for rack awareness (http://hadoop.apache.org/common/docs/r0.20.0/cluster_setup.html#Hadoop+Rack+Awareness)
should be augmented to include a sample script.

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