类 org.apache.hadoop.mapreduce.TaskID
的使用

使用TaskID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.mapreduce
org.apache.hadoop.tools.rumen	Rumen is a data extraction and analysis tool built for Apache Hadoop.

org.apache.hadoop.mapred中TaskID的使用

org.apache.hadoop.mapred中TaskID的子类

限定符和类型	类和说明
class	TaskID TaskID represents the immutable and unique identifier for a Map or Reduce Task.

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

限定符和类型	方法和说明
static TaskID	TaskID.downgrade(TaskID old) Downgrade a new TaskID to an old one

org.apache.hadoop.mapreduce中TaskID的使用

返回TaskID的org.apache.hadoop.mapreduce中的方法

限定符和类型	方法和说明
static TaskID	TaskID.forName(String str) Construct a TaskID object from given string
TaskID	TaskAttemptID.getTaskID() Returns the TaskID object that this task attempt belongs to

参数类型为TaskID的org.apache.hadoop.mapreduce中的构造器

构造器和说明
TaskAttemptID(TaskID taskId, int id) Constructs a TaskAttemptID object from given TaskID.

org.apache.hadoop.tools.rumen中TaskID的使用

返回TaskID的org.apache.hadoop.tools.rumen中的方法

限定符和类型	方法和说明
TaskID	TaskUpdatedEvent.getTaskId() Get the task ID
TaskID	TaskStartedEvent.getTaskId() Get the task id
TaskID	TaskFinishedEvent.getTaskId() Get task id
TaskID	TaskFailedEvent.getTaskId() Get the task id
TaskID	TaskAttemptUnsuccessfulCompletionEvent.getTaskId() Get the task id
TaskID	TaskAttemptStartedEvent.getTaskId() Get the task id
TaskID	TaskAttemptFinishedEvent.getTaskId() Get the task ID
TaskID	ReduceAttemptFinishedEvent.getTaskId() Get the Task ID
TaskID	MapAttemptFinishedEvent.getTaskId() Get the task ID

参数类型为TaskID的org.apache.hadoop.tools.rumen中的构造器

构造器和说明
TaskFailedEvent(TaskID id, long finishTime, TaskType taskType, String error, String status, TaskAttemptID failedDueToAttempt) Create an event to record task failure
TaskFinishedEvent(TaskID id, long finishTime, TaskType taskType, String status, Counters counters) Create an event to record the successful completion of a task
TaskStartedEvent(TaskID id, long startTime, TaskType taskType, String splitLocations) Create an event to record start of a task
TaskUpdatedEvent(TaskID id, long finishTime) Create an event to record task updates