org.apache.hadoop.mapreduce
Enum TaskType

java.lang.Object
  extended by java.lang.Enum<TaskType>
      extended by org.apache.hadoop.mapreduce.TaskType
All Implemented Interfaces:
Serializable, Comparable<TaskType>

public enum TaskType
extends Enum<TaskType>

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


Enum Constant Summary
JOB_CLEANUP
           
JOB_SETUP
           
MAP
           
REDUCE
           
TASK_CLEANUP
           
 
Method Summary
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


Copyright © 2009 The Apache Software Foundation