[MAPREDUCE-3661] JvmManager dies on windows because it doesn't have process IDs

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 1.0.0
• Component/s: task-controller

Environment

Windows+cygwin

• Assignee: Unassigned
• Reporter: Jonathan Matthew
• Created: 12/Jan/12 02:00
• Updated: 12/Jan/12 02:03

Description

JvmManager.kill() throws a NumberFormatException on Windows because it doesn't have process IDs, so it passes the default empty string (set in Child.main apparently) to Integer.parseInt(). This causes the task tracker to shut down.

I'm guessing the child can't send null (rather than "") as its pid to the parent, so the parent should treat the empty string the same as null when processing the pid string.