org.apache.hadoop.mapreduce

类 TaskAttemptContext

java.lang.Object

org.apache.hadoop.mapreduce.JobContext

org.apache.hadoop.mapreduce.TaskAttemptContext

所有已实现的接口:

Progressable

直接已知子类:

TaskAttemptContext, TaskInputOutputContext

public class TaskAttemptContext
extends JobContext
implements Progressable

The context for task attempts.

字段概要

从类继承的字段 org.apache.hadoop.mapreduce.JobContext

CACHE_ARCHIVES_VISIBILITIES, CACHE_FILE_VISIBILITIES, COMBINE_CLASS_ATTR, conf, credentials, INPUT_FORMAT_CLASS_ATTR, JOB_ACL_MODIFY_JOB, JOB_ACL_VIEW_JOB, JOB_CANCEL_DELEGATION_TOKEN, JOB_NAMENODES, MAP_CLASS_ATTR, OUTPUT_FORMAT_CLASS_ATTR, PARTITIONER_CLASS_ATTR, REDUCE_CLASS_ATTR, ugi, USER_LOG_RETAIN_HOURS

构造器概要

构造器

构造器和说明
TaskAttemptContext(Configuration conf, TaskAttemptID taskId)

方法概要

方法

限定符和类型	方法和说明
String	getStatus() Get the last set status message.
TaskAttemptID	getTaskAttemptID() Get the unique name for this task attempt.
void	progress() Report progress.
void	setStatus(String msg) Set the current status of the task to the given string.

从类继承的方法 org.apache.hadoop.mapreduce.JobContext

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

从类继承的方法 java.lang.Object

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

构造器详细资料

TaskAttemptContext

public TaskAttemptContext(Configuration conf,
                  TaskAttemptID taskId)

方法详细资料

getTaskAttemptID

public TaskAttemptID getTaskAttemptID()

Get the unique name for this task attempt.

setStatus

public void setStatus(String msg)
               throws IOException

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

抛出:

IOException

getStatus

public String getStatus()

Get the last set status message.

返回:

the current status message

progress

public void progress()

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

指定者:

progress 在接口中 Progressable