[MAPREDUCE-3714] Reduce hangs in a corner case

• Type: Bug
• Status: Closed
• Priority: Blocker
• Resolution: Fixed
• Affects Version/s: 0.23.0
• Fix Version/s: 0.23.1
• Component/s: mrv2, task
• Hadoop Flags: Reviewed
• Release Note: Fixed EventFetcher and Fetcher threads to shut-down properly so that reducers don't hang in corner cases.
• Assignee: Vinod Kumar Vavilapalli
• Reporter: Vinod Kumar Vavilapalli
• Created: 24/Jan/12 02:04
• Updated: 05/Mar/12 02:49
• Resolved: 24/Jan/12 23:19

Description

karams found this long time back and we(Sid/I) ran into this again.

Logs to follow..

Issue Links

• blocks: MAPREDUCE-3719 Make gridmix performance on YARN+MR to match or exceed that on 1.0