[HADOOP-133] the TaskTracker.Child.ping thread calls exit

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.1.1
• Fix Version/s: 0.2.0
• Assignee: Owen O'Malley
• Reporter: Owen O'Malley
• Created: 14/Apr/06 04:09
• Updated: 08/Jul/09 16:51
• Resolved: 19/Apr/06 05:03

Description

The TaskTracker.Child.startPinging thread calls exit if the TaskTracker doesn't respond. Calling exit in a mutli-threaded program is really problematic. In particular, it prevents cleanup/finally clauses from running. We need to move to a model where it uses Thread.interrupt(), which means we need to check the interrupt flag in place in the map loop and reduce loop and stop masking the InterruptExceptions.