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

Class MapTaskImpl

java.lang.Object

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

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

All Implemented Interfaces:

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

public class MapTaskImpl
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

MapTaskImpl(org.apache.hadoop.mapreduce.v2.api.records.JobId jobId, int partition, org.apache.hadoop.yarn.event.EventHandler eventHandler, org.apache.hadoop.fs.Path remoteJobConfFile, org.apache.hadoop.mapred.JobConf conf, org.apache.hadoop.mapreduce.split.JobSplit.TaskSplitMetaInfo taskSplitMetaInfo, 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()
protected String	getSplitsAsString()
protected org.apache.hadoop.mapreduce.split.JobSplit.TaskSplitMetaInfo	getTaskSplitMetaInfo()
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, 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

MapTaskImpl

public MapTaskImpl(org.apache.hadoop.mapreduce.v2.api.records.JobId jobId,
 int partition,
 org.apache.hadoop.yarn.event.EventHandler eventHandler,
 org.apache.hadoop.fs.Path remoteJobConfFile,
 org.apache.hadoop.mapred.JobConf conf,
 org.apache.hadoop.mapreduce.split.JobSplit.TaskSplitMetaInfo taskSplitMetaInfo,
 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()

getTaskSplitMetaInfo

protected org.apache.hadoop.mapreduce.split.JobSplit.TaskSplitMetaInfo getTaskSplitMetaInfo()

getSplitsAsString

protected String getSplitsAsString()

Overrides:

getSplitsAsString in class TaskImpl

Returns:

a String formatted as a comma-separated list of splits.