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https://issues.apache.org/jira/browse/HDFS-6488?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Brandon Li reassigned HDFS-6488:
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Assignee: Brandon Li
> HDFS superuser unable to access user's Trash files using NFSv3 mount
> --------------------------------------------------------------------
>
> Key: HDFS-6488
> URL: https://issues.apache.org/jira/browse/HDFS-6488
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: nfs
> Affects Versions: 2.3.0
> Reporter: Stephen Chu
> Assignee: Brandon Li
> Attachments: HDFS-6488.001.patch
>
>
> As hdfs superuseruser on the NFS mount, I cannot cd or ls the
> /user/schu/.Trash directory:
> {code}
> bash-4.1$ cd .Trash/
> bash: cd: .Trash/: Permission denied
> bash-4.1$ ls -la
> total 2
> drwxr-xr-x 4 schu 2584148964 128 Jan 7 10:42 .
> drwxr-xr-x 4 hdfs 2584148964 128 Jan 6 16:59 ..
> drwx------ 2 schu 2584148964 64 Jan 7 10:45 .Trash
> drwxr-xr-x 2 hdfs hdfs 64 Jan 7 10:42 tt
> bash-4.1$ ls .Trash
> ls: cannot open directory .Trash: Permission denied
> bash-4.1$
> {code}
> When using FsShell as hdfs superuser, I have superuser permissions to schu's
> .Trash contents:
> {code}
> bash-4.1$ hdfs dfs -ls -R /user/schu/.Trash
> drwx------ - schu supergroup 0 2014-01-07 10:48
> /user/schu/.Trash/Current
> drwx------ - schu supergroup 0 2014-01-07 10:48
> /user/schu/.Trash/Current/user
> drwx------ - schu supergroup 0 2014-01-07 10:48
> /user/schu/.Trash/Current/user/schu
> -rw-r--r-- 1 schu supergroup 4 2014-01-07 10:48
> /user/schu/.Trash/Current/user/schu/tf1
> {code}
> The NFSv3 logs don't produce any error when superuser tries to access schu
> Trash contents. However, for other permission errors (e.g. schu tries to
> delete a directory owned by hdfs), there will be a permission error in the
> logs.
> I think this is not specific to the .Trash directory perhaps.
> I created a /user/schu/dir1 which has the same permissions as .Trash (700).
> When I try cd'ing into the directory from the NFSv3 mount as hdfs superuser,
> I get the same permission denied.
> {code}
> [schu@hdfs-nfs ~]$ hdfs dfs -ls
> Found 4 items
> drwx------ - schu supergroup 0 2014-01-07 10:57 .Trash
> drwx------ - schu supergroup 0 2014-01-07 11:05 dir1
> -rw-r--r-- 1 schu supergroup 4 2014-01-07 11:05 tf1
> drwxr-xr-x - hdfs hdfs 0 2014-01-07 10:42 tt
> bash-4.1$ whoami
> hdfs
> bash-4.1$ pwd
> /hdfs_nfs_mount/user/schu
> bash-4.1$ cd dir1
> bash: cd: dir1: Permission denied
> bash-4.1$
> {code}
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