hadoop任务执行过程中函数的调用层次

1. class Job extends JobContext
2. class JobClient extends Configured implements MRConstants, Tool
3. interface JobSubmissionProtocol extends VersionedProtocol
4. class JobTracker implements MRConstants, InterTrackerProtocol,
       JobSubmissionProtocol, TaskTrackerManager, RefreshUserMappingsProtocol,
       RefreshAuthorizationPolicyProtocol, AdminOperationsProtocol,
       JobTrackerMXBean
5. class JobInfo implements Writable
6. class JobProfile implements Writable
7. class JobQueueJobInProgressListener extends JobInProgressListener
8. class EagerTaskInitializationListener extends JobInProgressListener
9. taskscheduler类相关的调用与实现，以及FIFO 调度器的具体讲解
10. hadoop metrics各参数解释
11. 

hadoop任务执行过程中函数的调用层次

原文：http://www.cnblogs.com/cxtblogs/p/5029571.html