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https://issues.apache.org/jira/browse/HADOOP-1298?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12491854
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Kurtis Heimerl commented on HADOOP-1298:
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Fixed the patch, now has user.java.
I am aware of the performance penalties. However, the common case does not have
a ton of INodes anyhow, as a distributed file system tends to have a smaller
amount of very large files.
Also, at this point it's more of a design specification anyhow. The
optimizations can happen later, perhaps keeping a global string area to remove
any duplicates. It wouldn't be hard to implement this in a hashtable.
> 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
> Attachments: hadoop-user-munncha.patch, hadoop-user-munncha.patch
>
>
> 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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