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

clock, committer, conf, eventHandler, fsTokens, jobFile, jobToken, nextAttemptNumber, partition, taskAttemptListener

Constructor Summary

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.mapreduce.OutputCommitter committer, org.apache.hadoop.security.token.Token<org.apache.hadoop.mapreduce.security.token.JobTokenIdentifier> jobToken, Collection<org.apache.hadoop.security.token.Token<? extends org.apache.hadoop.security.token.TokenIdentifier>> fsTokens, org.apache.hadoop.yarn.Clock clock, Map<org.apache.hadoop.mapreduce.v2.api.records.TaskId,org.apache.hadoop.mapreduce.jobhistory.JobHistoryParser.TaskInfo> completedTasksFromPreviousRun, int startCount, MRAppMetrics metrics)

Method Summary

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, getProgress, getReport, getState, getSuccessfulAttempt, handle, isFinished

Methods inherited from class java.lang.Object

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

Constructor Detail

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.mapreduce.OutputCommitter committer,
                   org.apache.hadoop.security.token.Token<org.apache.hadoop.mapreduce.security.token.JobTokenIdentifier> jobToken,
                   Collection<org.apache.hadoop.security.token.Token<? extends org.apache.hadoop.security.token.TokenIdentifier>> fsTokens,
                   org.apache.hadoop.yarn.Clock clock,
                   Map<org.apache.hadoop.mapreduce.v2.api.records.TaskId,org.apache.hadoop.mapreduce.jobhistory.JobHistoryParser.TaskInfo> completedTasksFromPreviousRun,
                   int startCount,
                   MRAppMetrics metrics)

Method Detail

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.