[HADOOP-9155] FsPermission should have different default value, 777 for directory and 666 for file

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 2.0.2-alpha
• Fix Version/s: 2.0.3-alpha, 0.23.7
• Target Version/s: 2.0.3-alpha
• Hadoop Flags: Reviewed
• Assignee: Binglin Chang
• Reporter: Binglin Chang
• Created: 18/Dec/12 07:56
• Updated: 15/Feb/13 13:12
• Resolved: 09/Jan/13 23:54

Description

The default permission for FileSystem#create is the same default as for FileSystem#mkdirs, namely 0777. It would make more sense for the default to be 0666 for files and 0777 for directories. The current default leads to a lot of files being created with the executable bit that really should not be. One example is anything created with FsShell's copyToLocal.

For reference, fopen creates files with a mode of 0666 (minus whatever bits are set in the umask; usually 0022. This seems to be the standard behavior and we should follow it. This is also a regression since branch-1.

Issue Links

• incorporates: HDFS-4333 Using right default value for creating files in HDFS
• is duplicated by: HDFS-4319 FSShell copyToLocal creates files with the executable bit set