[YARN-8427] Don't start opportunistic containers at container scheduler/finish event with over-allocation

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: YARN-1011
• Component/s: nodemanager
• Hadoop Flags: Reviewed
• Assignee: Haibo Chen
• Reporter: Haibo Chen
• Created: 14/Jun/18 20:02
• Updated: 22/Jun/18 22:10
• Resolved: 22/Jun/18 22:00

Description

As discussed in YARN-8250, we can stop opportunistic containers from being launched at container scheduler/finish events if the node is already over-allocating itself.  This can mitigate the issue that too many opportunistic containers can be launched and then quickly killed.