Introduction

GroomServer is a process whose main responsibility is to manage bsp tasks. In addition to task management, GroomServer collaborates with BSPMaster so that job execution can be done correctly. Some works GroomServer performs in communicating with BSPMaster include:

• Registration: enroll itself to BSPMaster by GroomServerStatus.
• Task Report: periodically report tasks status back BSPMaster.
  

State Diagram

GroomServer state includes

• NORMAL: Everything works fine.
• STALE: This happens when DiskErrorException is thrown.
• DENIED: This indicates failing to establish connection to BSPMaster.