[HDFS-1822] Editlog opcodes overlap between 20 security and later releases

• Type: Bug
• Status: Closed
• Priority: Blocker
• Resolution: Fixed
• Affects Version/s: 0.21.0, 0.22.0, 0.23.0
• Fix Version/s: 0.20.203.0, 0.20.204.0, 0.22.0, 0.23.0
• Component/s: namenode
• Hadoop Flags: Reviewed
• Assignee: Suresh Srinivas
• Reporter: Suresh Srinivas
• Created: 08/Apr/11 19:57
• Updated: 25/Aug/11 20:20
• Resolved: 27/Apr/11 21:46

Description

Same opcode are used for different operations between 0.20.security, 0.22 and 0.23. This results in failure to load editlogs on later release, especially during upgrades.

Issue Links

• incorporates: HDFS-1842 Cannot upgrade 0.20.203 to 0.21 with an editslog present
• is blocked by: HDFS-1936 Updating the layout version from HDFS-1822 causes upgrade problems.