org.apache.hadoop.mapreduce
Class TaskAttemptContext

java.lang.Object
  org.apache.hadoop.mapreduce.JobContext
      org.apache.hadoop.mapreduce.TaskAttemptContext

All Implemented Interfaces:

Progressable

Direct Known Subclasses:

TaskAttemptContext, TaskInputOutputContext

public class TaskAttemptContext
extends JobContext
implements Progressable

The context for task attempts.

Field Summary

Fields inherited from class org.apache.hadoop.mapreduce.JobContext

COMBINE_CLASS_ATTR, conf, INPUT_FORMAT_CLASS_ATTR, MAP_CLASS_ATTR, OUTPUT_FORMAT_CLASS_ATTR, PARTITIONER_CLASS_ATTR, REDUCE_CLASS_ATTR

Constructor Summary

TaskAttemptContext(Configuration conf, TaskAttemptID taskId)

Method Summary

java.lang.String	getStatus() Get the last set status message.
TaskAttemptID	getTaskAttemptID() Get the unique name for this task attempt.
void	progress() Report progress.
void	setStatus(java.lang.String msg) Set the current status of the task to the given string.

Methods inherited from class org.apache.hadoop.mapreduce.JobContext

getCombinerClass, getConfiguration, getGroupingComparator, getInputFormatClass, getJar, getJobID, getJobName, getMapOutputKeyClass, getMapOutputValueClass, getMapperClass, getNumReduceTasks, getOutputFormatClass, getOutputKeyClass, getOutputValueClass, getPartitionerClass, getReducerClass, getSortComparator, getWorkingDirectory

Methods inherited from class java.lang.Object

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

Constructor Detail

TaskAttemptContext

public TaskAttemptContext(Configuration conf,
                          TaskAttemptID taskId)

Method Detail

getTaskAttemptID

public TaskAttemptID getTaskAttemptID()

Get the unique name for this task attempt.

setStatus

public void setStatus(java.lang.String msg)
               throws java.io.IOException

Set the current status of the task to the given string.

Throws:

java.io.IOException

getStatus

public java.lang.String getStatus()

Get the last set status message.

Returns:

the current status message

progress

public void progress()

Report progress. The subtypes actually do work in this method.

Specified by:

progress in interface Progressable