[YARN-7693] ContainersMonitor support configurable

• Type: New Feature
• Status: Patch Available
• Priority: Minor
• Resolution: Unresolved
• Component/s: nodemanager
• Assignee: Jiandan Yang
• Reporter: Jiandan Yang
• Created: 02/Jan/18 02:54
• Updated: 24/Jan/18 09:08

Description

Currently ContainersMonitor has only one default implementation ContainersMonitorImpl,
After introducing Opportunistic Container, ContainersMonitor needs to monitor system metrics and even dynamically adjust Opportunistic and Guaranteed resources in the cgroup, so another ContainersMonitor may need to be implemented.
The current ContainerManagerImpl ContainersMonitorImpl direct new ContainerManagerImpl, so ContainersMonitor need to be configurable.