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Date: Sat, 2 Apr 2011 01:22:06 +0000 (UTC)
From: "Jakob Homan (JIRA)" <jira@apache.org>
To: hdfs-issues@hadoop.apache.org
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Subject: [jira] [Commented] (HDFS-1751) Intrinsic limits for HDFS files,
 directories
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    [ https://issues.apache.org/jira/browse/HDFS-1751?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13014920#comment-13014920 ] 

Jakob Homan commented on HDFS-1751:
-----------------------------------

I'm good with the fslimit deriving from quota exception (again, because this *is* a quota check).  If we're going to go with global limits for now, this is probably the best solution.  -1 withdrawn.  No +1 given; someone needs to do a full review of the latest patch.

> 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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