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From "Brian Bockelman (JIRA)" <j...@apache.org>
Subject [jira] Created: (HADOOP-4368) Superuser privileges required to do "df"
Date Tue, 07 Oct 2008 23:24:44 GMT
Superuser privileges required to do "df"

                 Key: HADOOP-4368
                 URL: https://issues.apache.org/jira/browse/HADOOP-4368
             Project: Hadoop Core
          Issue Type: Wish
          Components: contrib/fuse-dfs, dfs
    Affects Versions: 0.18.1
            Reporter: Brian Bockelman
            Priority: Minor

super user privileges are required in DFS in order to get the file system statistics (FSNamesystem.java,
getStats method).  This means that when HDFS is mounted via fuse-dfs as a non-root user, "df"
is going to return 16exabytes total and 0 free instead of the correct amount.

As far as I can tell, there's no need to require super user privileges to see the file system
size (and historically in Unix, this is not required).

To fix this, simply comment out the privilege check in the getStats method.

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