org.apache.hadoop.mapreduce

Enum TaskType

java.lang.Object

java.lang.Enum<TaskType>

org.apache.hadoop.mapreduce.TaskType

All Implemented Interfaces:

Serializable, Comparable<TaskType>

@InterfaceAudience.Public
@InterfaceStability.Stable
public enum TaskType
extends Enum<TaskType>

Enum for map, reduce, job-setup, job-cleanup, task-cleanup task types.

Enum Constant Summary

Enum Constants

Enum Constant and Description
JOB_CLEANUP
JOB_SETUP
MAP
REDUCE
TASK_CLEANUP

Method Summary

Methods

Modifier and Type	Method and Description
static TaskType	valueOf(String name) Returns the enum constant of this type with the specified name.
static TaskType[]	values() Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum

clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Detail

MAP

public static final TaskType MAP

REDUCE

public static final TaskType REDUCE

JOB_SETUP

public static final TaskType JOB_SETUP

JOB_CLEANUP

public static final TaskType JOB_CLEANUP

TASK_CLEANUP

public static final TaskType TASK_CLEANUP

Method Detail

values

public static TaskType[] values()

Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:

for (TaskType c : TaskType.values())
    System.out.println(c);

Returns:

an array containing the constants of this enum type, in the order they are declared

valueOf

public static TaskType valueOf(String name)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

IllegalArgumentException - if this enum type has no constant with the specified name

NullPointerException - if the argument is null