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From "Doug Cutting (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-1298) adding user info to file
Date Tue, 18 Sep 2007 19:45:44 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-1298?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12528528
] 

Doug Cutting commented on HADOOP-1298:
--------------------------------------

> It'd be a lot more efficient to send the ticket on connection establishment [ ... ]

Indeed, but that substantially changes semantics.  We cache and re-use connections.  Requests
and responses from different calls may be interleaved on a single connection.  The JobTracker
performs actions for different users over a single connection.  All this would need to change
if authentication were per-connection rather than per-call.


> 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
>             Fix For: 0.15.0
>
>         Attachments: 1298_2007-09-06b.patch, 1298_2007-09-07g.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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