[YARN-8929] DefaultOOMHandler should only pick running containers to kill upon oom events

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.2.0
• Fix Version/s: 3.3.0
• Component/s: nodemanager
• Hadoop Flags: Reviewed
• Assignee: Haibo Chen
• Reporter: Haibo Chen
• Created: 22/Oct/18 17:56
• Updated: 24/Oct/18 20:40
• Resolved: 24/Oct/18 20:16

Description

DefaultOOMHandler currently currently sort all known containers based on the execution type primarily and their start time secondarily.

However, it does not check if a container is running or not.  Kill a non-running container will not release any memory, hence won't get us of the under-oom status.