[HADOOP-7064] FsShell does not properly check permissions of files in a directory when doing rmr

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 0.20.2
• Component/s: fs
• Assignee: Unassigned
• Reporter: Alan Gates
• Created: 12/Nov/10 01:49
• Updated: 12/Aug/16 08:53

Description

In POSIX file semantics, the ability to remove an entry a file is determined by whether the user has write permissions on the directory containing the file. However, to delete recursively (rm -r) the user must have write permissions in all directories being removed. Thus if you have a directory structure like /a/b/c and a user has write permissions on a but not on b, then he is not allowed to do 'rm -r b'. This is because he does not have permissions to remove c, so the rm of b fails, even though he has permission to remove b.

However, 'hadoop fs -rmr b' removes both b and c in this case. It should instead fail and return an error message saying the user does not have permission to remove c. 'hadoop fs -rmr c' correctly fails.

Issue Links

• relates to: HDFS-8312 Trash does not descent into child directories to check for permissions