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https://issues.apache.org/jira/browse/HADOOP-2447?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12553437
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Doug Cutting commented on HADOOP-2447:
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> Is the scaling different for inodes vs. blocks though? 

Probably.  But getting that right might be as difficult as tuning things based 
on heap size, which would probably be best.  In the meantime, having this 
quick-and-dirty knob is better than no knob at all, right?


> HDFS should be capable of limiting the total number of inodes in the system
> ---------------------------------------------------------------------------
>
>                 Key: HADOOP-2447
>                 URL: https://issues.apache.org/jira/browse/HADOOP-2447
>             Project: Hadoop
>          Issue Type: New Feature
>            Reporter: Sameer Paranjpye
>            Assignee: dhruba borthakur
>             Fix For: 0.16.0
>
>         Attachments: fileLimit.patch
>
>
> The HDFS Namenode should be capable of limiting the total number of Inodes 
> (files + directories). The can be done through a config variable, settable in 
> hadoop-site.xml. The default should be no limit.

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