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dhruba borthakur commented on HADOOP-1298: ------------------------------------------ This patch implements access checks for all components of a path when a filename-lookup occurs. This could potentially complicate things when we go to a more distributed namenode. If, in future, we consider a hash function to map a filename to the location of its namenode, then permission checking along the entire path while looking up a file cannot be implemented efficiently. In short, i think we need some more discussion on whether HDFS will do access checks along the entire path while looking up a file. I believe NFS does not do access checks along the entire path (especially because it uses fileids for lookups). > 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_2007-08-23a.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. -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.