[MAPREDUCE-4089] Hung Tasks never time out.

• Type: Bug
• Status: Closed
• Priority: Blocker
• Resolution: Fixed
• Affects Version/s: 0.23.2, 2.0.0-alpha
• Fix Version/s: 0.23.3, 2.0.2-alpha
• Component/s: mrv2
• Target Version/s: 0.23.2, 2.0.0-alpha
• Assignee: Robert Joseph Evans
• Reporter: Robert Joseph Evans
• Created: 30/Mar/12 18:06
• Updated: 10/Mar/15 04:30
• Resolved: 02/Apr/12 20:31

Description

The AM will timeout a task through mapreduce.task.timeout only when it does not hear from the task within the given timeframe. On 1.0 a task must be making progress, either by reading input from HDFS, writing output to HDFS, writing to a log, or calling a special method to inform it that it is still making progress.

This is because on 0.23 a status update which happens every 3 seconds is counted as progress.