Introduction

The main responsibility of BSPMaster can be found at Architecture

Services

The BSPMaster is a collection of services performing different tasks, including:

• masterServer: An RPC server.
• instructor: Asynchronous message dispatcher.
• taskScheduler: A task scheduling service.
• infoServer: A http server.
• supervisor: (TODO: move to Monitor?)
• systemDirCleaner: Cleanup system directory, default /tmp/hadoop/bsp/system, on HDFS.
• syncClient: ZooKeeper client
• timer service: TODO

• Receptionist
• Scheduler
• GroomManager
• Monitor
  

State

Two states are applied to BSPMaster node, including:

• Initializing
• Running
• Failed
• Shutting Down
• Recovering
• Stopped

MasterStateTransition.png|alt=BSPMaster State title=BSPMaster State!

Initializing

1. Create Identifier 2. Start RPC service 3. File System service
   1. Create System directory
      4. Start Barrier Synchronization service
   • ZooKeeper
     5. Start Scheduler
     6. Start Monitor
     7. Start Web UI
     

Note

• Merge 6, 7
  

Source

BSPMaster.java