接口 org.apache.hadoop.mapred.TaskUmbilicalProtocol
的使用

使用TaskUmbilicalProtocol的程序包

程序包	说明
org.apache.hadoop.mapred	A software framework for easily writing applications which process vast amounts of data (multi-terabyte data-sets) parallelly on large clusters (thousands of nodes) built of commodity hardware in a reliable, fault-tolerant manner.

org.apache.hadoop.mapred中TaskUmbilicalProtocol的使用

实现TaskUmbilicalProtocol的org.apache.hadoop.mapred中的类

限定符和类型	类和说明
class	TaskTracker TaskTracker is a process that starts and tracks MR Tasks in a networked environment.

声明为TaskUmbilicalProtocol的org.apache.hadoop.mapred中的字段

限定符和类型	字段和说明
protected TaskUmbilicalProtocol	Task.umbilical

参数类型为TaskUmbilicalProtocol的org.apache.hadoop.mapred中的方法

限定符和类型	方法和说明
void	Task.done(TaskUmbilicalProtocol umbilical, Task.TaskReporter reporter)
abstract void	TaskController.initializeJob(String user, String jobid, Path credentials, Path jobConf, TaskUmbilicalProtocol taskTracker, InetSocketAddress ttAddr) Create all of the directories necessary for the job to start and download all of the job and private distributed cache files.
void	DefaultTaskController.initializeJob(String user, String jobid, Path credentials, Path jobConf, TaskUmbilicalProtocol taskTracker, InetSocketAddress ttAddr) This routine initializes the local file system for running a job.
void	JobLocalizer.localizeJobFiles(JobID jobid, JobConf jConf, Path localJobFile, Path localJobTokenFile, TaskUmbilicalProtocol taskTracker)
void	JobLocalizer.localizeJobFiles(JobID jobid, JobConf jConf, Path localJobTokenFile, TaskUmbilicalProtocol taskTracker)
protected void	Task.reportNextRecordRange(TaskUmbilicalProtocol umbilical, long nextRecIndex) Reports the next executing record range to TaskTracker.
abstract void	Task.run(JobConf job, TaskUmbilicalProtocol umbilical) Run this task as a part of the named job.
protected void	Task.runJobCleanupTask(TaskUmbilicalProtocol umbilical, Task.TaskReporter reporter)
protected void	Task.runJobSetupTask(TaskUmbilicalProtocol umbilical, Task.TaskReporter reporter)
int	JobLocalizer.runSetup(String user, String jobid, Path localJobTokenFile, TaskUmbilicalProtocol taskTracker)
protected void	Task.runTaskCleanupTask(TaskUmbilicalProtocol umbilical, Task.TaskReporter reporter)
protected void	Task.statusUpdate(TaskUmbilicalProtocol umbilical)