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https://issues.apache.org/jira/browse/HADOOP-6827?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12879351#action_12879351
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Arun C Murthy commented on HADOOP-6827:
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Rodrigo, can you please put up a concrete proposal? Thanks.

> Extend the API of NetworkTopology
> ---------------------------------
>
>                 Key: HADOOP-6827
>                 URL: https://issues.apache.org/jira/browse/HADOOP-6827
>             Project: Hadoop Common
>          Issue Type: New Feature
>            Reporter: Rodrigo Schmidt
>            Assignee: Rodrigo Schmidt
>
> The current API for NetworkTopology is too restricted (and somehow biased 
> towards the default block placement algorithm). 
> For instance, it lacks methods to list racks or limit machines within a rack 
> which are fundamental for HDFS-1094.

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