MasterBaseTaskExecThread instance and intercept `call` methods,
this class provides an isolated thread for running job.MasterExecThread instance and intercept `run` and `getProcessInstanceState` methods,
the `run` method is a unified entrance of scheduled job.MasterSchedulerService instance and intercept `scheduleProcess` method,
this method is a scheduler entrance of job.NettyRemoteChannel instance and intercept `writeAndFlush` method,
this method send message to remote server.NettyRemotingClient instance and intercept `send` method,
this method send message to remote server.NettyRequestProcessor instance and intercept `process` method,
this method receive and handle message from remote server.AbstractTask instance and intercept `init`、`handle` and `after` methods,
the implementation class execute task through these methods.TaskExecuteThread instance and intercept `run` method,
this class provides an isolated thread for running task.TaskPriorityQueueConsumer instance and intercept `dispatch` method,
this method is a dispatch the task info of memory queue to worker nodes.TaskPriorityQueueImpl instance and intercept `put` method,
this method is a publish task info to memory queue.Copyright © 2021 The Apache Software Foundation. All rights reserved.