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https://issues.apache.org/jira/browse/HADOOP-3187?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12593840#action_12593840
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Doug Cutting commented on HADOOP-3187:
--------------------------------------

+1 This sounds like a good design to me.  I assume that one could set the quota 
on the root directory to something based on the amount of memory available on 
the namenode, as the simplest means of control, right?

> Quotas for name space management
> --------------------------------
>
>                 Key: HADOOP-3187
>                 URL: https://issues.apache.org/jira/browse/HADOOP-3187
>             Project: Hadoop Core
>          Issue Type: New Feature
>            Reporter: Robert Chansler
>            Assignee: Hairong Kuang
>         Attachments: QuotasDesign.pdf
>
>
> Create a quota mechanism for name space management. 
> Quota set at a directory by super user restricts that number of names in and 
> below that directory.
> Quota tested by create() and rename().

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