/** Create and initialize (but don't start) a single job. */
protected Job createJob(Configuration conf) {
// create single job
Job newJob = new JobInAppMaster(jobId, conf, context);
((RunningAppContext) context).jobs.put(newJob.getID(), newJob);
dispatcher.register(JobFinishEvent.Type.class, createJobFinishEventHandler());
return newJob;
}
private void startDAG(DAG dag) {
currentDAG = dag;
this.state = DAGAppMasterState.RUNNING;
// End of creating the job.
((RunningAppContext) context).setDAG(currentDAG);
// create a job event for job initialization
DAGEvent initDagEvent = new DAGEvent(currentDAG.getID(), DAGEventType.DAG_INIT);
// Send init to the job (this does NOT trigger job execution)
// This is a synchronous call, not an event through dispatcher. We want
// job-init to be done completely here.
dagEventDispatcher.handle(initDagEvent);
// All components have started, start the job.
/** create a job-start event to get this ball rolling */
DAGEvent startDagEvent = new DAGEvent(currentDAG.getID(), DAGEventType.DAG_START);
/** send the job-start event. this triggers the job execution. */
sendEvent(startDagEvent);
}
