[MAPREDUCE-3125] app master web UI shows reduce task progress 100% even though reducers not complete and state running/scheduled

• Type: Bug
• Status: Closed
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: 0.23.0
• Fix Version/s: 0.23.0
• Component/s: mrv2
• Target Version/s: 0.23.0
• Hadoop Flags: Reviewed
• Assignee: Hitesh Shah
• Reporter: Thomas Graves
• Created: 29/Sep/11 22:29
• Updated: 15/Nov/11 00:50
• Resolved: 12/Oct/11 06:53

Description

ran same command as MAPREDUCE-3124. The app master web ui was displaying the reduce task progress as 100% even though the states were still running/scheduled. Each of those reduce tasks had attempts that failed or killed and another one unassigned. Attaching screenshots.