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https://issues.apache.org/jira/browse/HDFS-3000?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13240858#comment-13240858
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Aaron T. Myers commented on HDFS-3000:
--------------------------------------

bq. If you cannot easily find an counterexample, does it qualify for "quite 
specific"?

I didn't say I couldn't find one - I said I didn't know. My not knowing if such 
things are common doesn't necessarily mean they're not. :)

bq. No. There are many values that users can read but not update, e.g. 
hostname, other network configurations, home directory, etc.

That seems reasonable to me. A separate administrative interface it is, then. 
I'll work on a patch for it.
                
> Add a public API for setting quotas
> -----------------------------------
>
>                 Key: HDFS-3000
>                 URL: https://issues.apache.org/jira/browse/HDFS-3000
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: hdfs client
>    Affects Versions: 0.23.1
>            Reporter: Aaron T. Myers
>            Assignee: Aaron T. Myers
>
> Currently one can set the quota of a file or directory from the command line, 
> but if a user wants to set it programmatically, they need to use 
> DistributedFileSystem, which is annotated InterfaceAudience.Private.

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