Responsibility

• Watch GroomServer registration/ deregistration. Ephemeral.
• Register to Supervisor.
• Maintain (local) groom list. Persistent
  

Scenario

• When a groom registers, it
  # check and move groom out of quarantined set if any
  # cache groom server spec info.
  
• When detecting a GroomServer offline, it
  # quarantine the offline groom
  # trigger reschedule tasks event
  
  
  
  

Source

GroomServerManager.java