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

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

Constructor Summary

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.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()
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, getSplitsAsString, getState, getSuccessfulAttempt, handle, isFinished

Methods inherited from class java.lang.Object

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

Constructor Detail

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.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()