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Brandon Li edited comment on HDFS-6488 at 3/2/15 11:59 PM: ----------------------------------------------------------- I've uploaded a new patch to address the comments from [~ajisakaa]. was (Author: brandonli): I've uploaded a new patch to address the comments from @Akira AJISAKA. > 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, HDFS-6488.002.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} -- This message was sent by Atlassian JIRA (v6.3.4#6332)