[HADOOP-5338] Reduce tasks are stuck waiting for map outputs when none are in progress

• Type: Bug
• Status: Closed
• Priority: Blocker
• Resolution: Fixed
• Affects Version/s: 0.20.0
• Fix Version/s: 0.20.0
• Hadoop Flags: Reviewed
• Assignee: Amar Kamat
• Reporter: Ramya Sunil
• Created: 26/Feb/09 12:49
• Updated: 08/Jul/09 16:53
• Resolved: 06/Mar/09 06:48

Description

When JT is restarted several times, a situation is encountered when the reduce tasks are stuck forever waiting for map outputs. However 100%map is complete and none of the map tasks are in progress. The reduce tasks wait infinitely.