[HDFS-6689] NFS doesn't return correct lookup access for directories

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.2.0
• Fix Version/s: 2.6.0
• Component/s: nfs
• Hadoop Flags: Reviewed
• Assignee: Brandon Li
• Reporter: Yesha Vora
• Created: 15/Jul/14 21:09
• Updated: 01/Dec/14 03:09
• Resolved: 16/Jul/14 19:47

Description

NFS does not allow other user to access a file with 644 permission and a parent with 711 access right.

Steps to reproduce:

1. Create a directory /user/userX with 711 permissions
2. Upload a file at /user/userX/TestFile with 644 as userX
3. Try to access WriteTest as userY.
HDFS will allow to read TestFile.

bash-4.1$ id
uid=661(userY) gid=100(users) groups=100(users),13016(groupY)

bash-4.1$ hdfs dfs -cat /user/userX/TestFile
create a file with some content

NFS will not allow to read TestFile.

bash-4.1$ cat /tmp/tmp_mnt/user/userX/TestFile
cat: /tmp/tmp_mnt/user/userX/TestFile: Permission denied