hadoop-common-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Doug Cutting (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-4368) Superuser privileges required to do "df"
Date Fri, 09 Jan 2009 19:43:59 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-4368?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12662494#action_12662494
] 

Doug Cutting commented on HADOOP-4368:
--------------------------------------

Craig> any comment on the last issue I raised for LocalFileSystem etc?

Hmm.  I guess it makes sense to make it FileSystem#getStats(Path), so that LocalFileSystem
can report different stats for different volumes.  Should we also define FileSystem#getStats()
to call this with the root path by default as a convenience?

> 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
>            Assignee: Craig Macdonald
>            Priority: Minor
>         Attachments: fuse_statfs.patch, fuse_statfs_trunk.patch, hadoop4368.fsstatus.patch,
hadoop4368.fsstatus.v2.patch
>
>   Original Estimate: 0.17h
>  Remaining Estimate: 0.17h
>
> 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.

-- 
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.


Mime
View raw message