[HDFS-3644] OEV should recognize and deal with 0.20.20x opcode versions

• Type: Bug
• Status: Reopened
• Priority: Minor
• Resolution: Unresolved
• Affects Version/s: 2.0.0-alpha, 3.0.0-alpha1
• Component/s: tools
• Assignee: Unassigned
• Reporter: Todd Lipcon
• Created: 12/Jul/12 06:03
• Updated: 12/May/16 18:15

Description

We have some opcode conflicts for edit logs between 0.20.20x (LV -19, -31) vs newer versions. For edit log loading, we dealt with this by forcing users to save namespace on an earlier version before upgrading. But, using a trunk OEV on an older version is useful since the OEV has had so many improvements. It would be nice to be able to specify a flag to the OEV to be able to run on older edit logs.