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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-6488) HDFS superuser unable to access user's Trash files using NFSv3 mount
Date Wed, 04 Mar 2015 00:29:07 GMT

    [ https://issues.apache.org/jira/browse/HDFS-6488?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14346097#comment-14346097
] 

Hadoop QA commented on HDFS-6488:
---------------------------------

{color:red}-1 overall{color}.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12702216/HDFS-6488.003.patch
  against trunk revision e17e5ba.

    {color:green}+1 @author{color}.  The patch does not contain any @author tags.

    {color:red}-1 tests included{color}.  The patch doesn't appear to include any new or modified
tests.
                        Please justify why no new tests are needed for this patch.
                        Also please list what manual steps were performed to verify this patch.

    {color:green}+1 javac{color}.  The applied patch does not increase the total number of
javac compiler warnings.

    {color:green}+1 javadoc{color}.  There were no new javadoc warning messages.

    {color:green}+1 eclipse:eclipse{color}.  The patch built with eclipse:eclipse.

    {color:green}+1 findbugs{color}.  The patch does not introduce any new Findbugs (version
2.0.3) warnings.

    {color:green}+1 release audit{color}.  The applied patch does not increase the total number
of release audit warnings.

    {color:red}-1 core tests{color}.  The patch failed these unit tests in hadoop-hdfs-project/hadoop-hdfs
hadoop-hdfs-project/hadoop-hdfs-nfs:

                  org.apache.hadoop.hdfs.server.namenode.TestFileTruncate

                                      The test build failed in hadoop-hdfs-project/hadoop-hdfs-nfs


Test results: https://builds.apache.org/job/PreCommit-HDFS-Build/9712//testReport/
Console output: https://builds.apache.org/job/PreCommit-HDFS-Build/9712//console

This message is automatically generated.

> 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, HDFS-6488.003.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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