[MAPREDUCE-6068] Illegal progress value warnings in map tasks

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.0.0-alpha1
• Fix Version/s: 2.8.0, 3.0.0-alpha1
• Component/s: mrv2, task
• Target Version/s: 2.8.0
• Hadoop Flags: Reviewed
• Assignee: Binglin Chang
• Reporter: Todd Lipcon
• Created: 03/Sep/14 17:16
• Updated: 25/Oct/19 20:26
• Resolved: 11/Jan/16 14:08

Description

When running a terasort on latest trunk, I see the following in my task logs:

2014-09-02 17:42:28,437 INFO [main] org.apache.hadoop.mapred.MapTask: Map output collector class = org.apache.hadoop.mapred.MapTask$MapOutputBuffer
2014-09-02 17:42:42,238 WARN [main] org.apache.hadoop.util.Progress: Illegal progress value found, progress is larger than 1. Progress will be changed to 1
2014-09-02 17:42:42,238 WARN [main] org.apache.hadoop.util.Progress: Illegal progress value found, progress is larger than 1. Progress will be changed to 1
2014-09-02 17:42:42,241 INFO [main] org.apache.hadoop.mapred.MapTask: Starting flush of map output

We should eliminate these warnings.