[MAPREDUCE-4121] dump the threads stack trace to stdout before killing a Task in timeout

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Duplicate
• Assignee: Unassigned
• Reporter: Julien Le Dem
• Created: 08/Apr/12 22:31
• Updated: 09/Apr/12 05:46
• Resolved: 09/Apr/12 05:46

Description

Typically when a job fails because of tasks timing out we investigate the issue by running the job again and triggering a dump of the thread stack traces of one of the tasks with jstack/"kill -3" before it times out.
It would be convenient if the Task tracker could do the same right before killing tasks in time out. This usually points at the offending code.

Issue Links

• duplicates: MAPREDUCE-1119 When tasks fail to report status, show tasks's stack dump before killing