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From "dhruba borthakur (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-1298) adding user info to file
Date Thu, 31 May 2007 07:45:15 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-1298?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12500307
] 

dhruba borthakur commented on HADOOP-1298:
------------------------------------------

Regarding point 7 above. Suppose we support creation time/modification time of a file. These
will not be part of the Permissions object becuase they have nothing in common with uid/gid.
Instead they might be two new fields in the INode. This means that logCreateFile would need
to take two additional parameters. The second parameter to logEdit() is currently an array
of size 2. Instead it could be an array of size 3.

Regarding having a Permission object embedded in the INode: it might be preferable to make
the INode contain the two new Integer fields (owner and ownerGroup) directly. It should save
some memory.




> 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, hadoop-user-munncha.patch,
hadoop-user-munncha.patch10, hadoop-user-munncha.patch11, hadoop-user-munncha.patch12, hadoop-user-munncha.patch13,
hadoop-user-munncha.patch14, hadoop-user-munncha.patch15, hadoop-user-munncha.patch16, hadoop-user-munncha.patch17,
hadoop-user-munncha.patch4, hadoop-user-munncha.patch5, hadoop-user-munncha.patch6, hadoop-user-munncha.patch7,
hadoop-user-munncha.patch8, hadoop-user-munncha.patch9
>
>
> 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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