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https://issues.apache.org/jira/browse/HADOOP-1298?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12549247
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Raghu Angadi commented on HADOOP-1298:
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Isn't permission checking and locking inefficient? See [comment
above|#action_12526538].
So, most of the work is done twice : locking and traversing the tree (note that
traversing takes a quite a bit of path and string operations). And strictly
speaking, it is not correct.
> adding user info to file
> ------------------------
>
> Key: HADOOP-1298
> URL: https://issues.apache.org/jira/browse/HADOOP-1298
> Project: Hadoop
> Issue Type: New Feature
> Components: dfs, fs
> Reporter: Kurtis Heimerl
> Assignee: Christophe Taton
> Attachments: 1298_2007-09-22_1.patch, 1298_2007-10-04_1.patch,
> 1298_20071206b.patch, hadoop-user-munncha.patch17
>
>
> I'm working on adding a permissions model to hadoop's DFS. The first step is
> this change, which associates user info with files. Following this I'll
> assoicate permissions info, then block methods based on that user info, then
> authorization of the user info.
> So, right now i've implemented adding user info to files. I'm looking for
> feedback before I clean this up and make it offical.
> I wasn't sure what release, i'm working off trunk.
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