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https://issues.apache.org/jira/browse/HDFS-1751?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13008188#comment-13008188
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Daryn Sharp commented on HDFS-1751:
-----------------------------------

Yes, the comment is regarding the "reuse" of the checkQuota flag.  The lines 
that immediately follow are:
+    if (checkQuota) {
+      verifyFsLimits(pathComponents, pos, child);
+    }


> Intrinsic limits for HDFS files, directories
> --------------------------------------------
>
>                 Key: HDFS-1751
>                 URL: https://issues.apache.org/jira/browse/HDFS-1751
>             Project: Hadoop HDFS
>          Issue Type: New Feature
>          Components: data-node
>    Affects Versions: 0.22.0
>            Reporter: Daryn Sharp
>            Assignee: Daryn Sharp
>             Fix For: 0.23.0
>
>         Attachments: HDFS-1751-2.patch, HDFS-1751-3.patch, HDFS-1751-4.patch, 
> HDFS-1751.patch
>
>
> Enforce a configurable limit on:
>   the length of a path component
>   the number of names in a directory
> The intention is to prevent a too-long name or a too-full directory. This is 
> not about RPC buffers, the length of command lines, etc. There may be good 
> reasons for those kinds of limits, but that is not the intended scope of this 
> feature. Consequently, a reasonable implementation might be to extend the 
> existing quota checker so that it faults the creation of a name that violates 
> the limits. This strategy of faulting new creation evades the problem of 
> existing names or directories that violate the limits.

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