[HADOOP-4395] Reloading FSImage and FSEditLog may erase user and group information

• Type: Bug
• Status: Closed
• Priority: Blocker
• Resolution: Fixed
• Fix Version/s: 0.18.2
• Hadoop Flags: Reviewed
• Assignee: Tsz Wo Nicholas Sze
• Reporter: Tsz Wo Nicholas Sze
• Created: 11/Oct/08 01:52
• Updated: 08/Jul/09 17:43
• Resolved: 13/Oct/08 19:15

Description

The bug can be reproduced as following:

bash-3.2$ ./bin/hadoop fs -lsr                 
-rw-r--r--   3 tsz supergroup       1366 2008-10-10 17:52 /user/tsz/a.txt
-rw-r--r--   3 tsz supergroup       1366 2008-10-10 17:52 /user/tsz/b.txt
bash-3.2$ ./bin/hadoop fs -chown sze a.txt
bash-3.2$ ./bin/hadoop fs -lsr
-rw-r--r--   3 sze supergroup       1366 2008-10-10 17:52 /user/tsz/a.txt
-rw-r--r--   3 tsz supergroup       1366 2008-10-10 17:52 /user/tsz/b.txt

Then, restart cluster ...

bash-3.2$ ./bin/hadoop fs -lsr
-rw-r--r--   3 sze                  1366 2008-10-10 17:52 /user/tsz/a.txt
-rw-r--r--   3 tsz supergroup       1366 2008-10-10 17:52 /user/tsz/b.txt

The group information for a.txt is missing.