[HDFS-1258] Clearing namespace quota on "/" corrupts FS image

• Type: Bug
• Status: Closed
• Priority: Blocker
• Resolution: Fixed
• Fix Version/s: 0.20.3, 0.20-append, 0.20.204.0, 0.21.0, 0.22.0
• Component/s: namenode
• Hadoop Flags: Reviewed
• Assignee: Aaron Myers
• Reporter: Aaron Myers
• Created: 22/Jun/10 20:06
• Updated: 23/Sep/14 04:02
• Resolved: 06/Jul/10 17:40

Description

The HDFS root directory starts out with a default namespace quota of Integer.MAX_VALUE. If you clear this quota (using "hadoop dfsadmin -clrQuota /"), the fsimage gets corrupted immediately. Subsequent 2NN rolls will fail, and the NN will not come back up from a restart.

Issue Links

• is related to: HDFS-46 The namespace quota of root directory should not be Integer.MAX_VALUE
• is related to: HDFS-1189 Quota counts missed between clear quota and set quota