Package org.apache.hadoop.mapreduce.v2.app.job.impl

Class ReduceTaskImpl

java.lang.Object

org.apache.hadoop.mapreduce.v2.app.job.impl.TaskImpl

org.apache.hadoop.mapreduce.v2.app.job.impl.ReduceTaskImpl

All Implemented Interfaces:

Task, org.apache.hadoop.yarn.event.EventHandler<TaskEvent>

public class ReduceTaskImpl
extends TaskImpl

Field Summary

Fields inherited from class org.apache.hadoop.mapreduce.v2.app.job.impl.TaskImpl

appContext, clock, conf, credentials, encryptedShuffle, eventHandler, jobFile, jobToken, nextAttemptNumber, partition, taskAttemptListener

Constructor Summary

Constructors

Constructor

Description

ReduceTaskImpl(org.apache.hadoop.mapreduce.v2.api.records.JobId jobId, int partition, org.apache.hadoop.yarn.event.EventHandler eventHandler, org.apache.hadoop.fs.Path jobFile, org.apache.hadoop.mapred.JobConf conf, int numMapTasks, TaskAttemptListener taskAttemptListener, org.apache.hadoop.security.token.Token<org.apache.hadoop.mapreduce.security.token.JobTokenIdentifier> jobToken, org.apache.hadoop.security.Credentials credentials, org.apache.hadoop.yarn.util.Clock clock, int appAttemptId, MRAppMetrics metrics, AppContext appContext)

Method Summary

Modifier and Type	Method	Description
protected TaskAttemptImpl	createAttempt()
protected int	getMaxAttempts()
org.apache.hadoop.mapreduce.v2.api.records.TaskType	getType()

Methods inherited from class org.apache.hadoop.mapreduce.v2.app.job.impl.TaskImpl

canCommit, getAttempt, getAttempts, getCounters, getID, getInternalState, getProgress, getReport, getSplitsAsString, getState, getSuccessfulAttempt, handle, internalError, isFinished

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

ReduceTaskImpl

public ReduceTaskImpl(org.apache.hadoop.mapreduce.v2.api.records.JobId jobId,
 int partition,
 org.apache.hadoop.yarn.event.EventHandler eventHandler,
 org.apache.hadoop.fs.Path jobFile,
 org.apache.hadoop.mapred.JobConf conf,
 int numMapTasks,
 TaskAttemptListener taskAttemptListener,
 org.apache.hadoop.security.token.Token<org.apache.hadoop.mapreduce.security.token.JobTokenIdentifier> jobToken,
 org.apache.hadoop.security.Credentials credentials,
 org.apache.hadoop.yarn.util.Clock clock,
 int appAttemptId,
 MRAppMetrics metrics,
 AppContext appContext)

Method Details

getMaxAttempts

protected int getMaxAttempts()

Specified by:

getMaxAttempts in class TaskImpl

createAttempt

protected TaskAttemptImpl createAttempt()

Specified by:

createAttempt in class TaskImpl

getType

public org.apache.hadoop.mapreduce.v2.api.records.TaskType getType()