org.apache.hadoop.mapreduce

Enum JobPriority

java.lang.Object

java.lang.Enum<JobPriority>

org.apache.hadoop.mapreduce.JobPriority

All Implemented Interfaces:

Serializable, Comparable<JobPriority>

@InterfaceAudience.Public
 @InterfaceStability.Evolving
public enum JobPriority
extends Enum<JobPriority>

Used to describe the priority of the running job. DEFAULT : While submitting a job, if the user is not specifying priority, YARN has the capability to pick the default priority as per its config. Hence MapReduce can indicate such cases with this new enum. UNDEFINED_PRIORITY : YARN supports priority as an integer. Hence other than the five defined enums, YARN can consider other integers also. To generalize such cases, this specific enum is used.

Enum Constant Summary

Enum Constants

Enum Constant and Description
DEFAULT
HIGH
LOW
NORMAL
UNDEFINED_PRIORITY
VERY_HIGH
VERY_LOW

Method Summary

Modifier and Type	Method and Description
static JobPriority	valueOf(String name) Returns the enum constant of this type with the specified name.
static JobPriority[]	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

VERY_HIGH

public static final JobPriority VERY_HIGH

HIGH

public static final JobPriority HIGH

NORMAL

public static final JobPriority NORMAL

LOW

public static final JobPriority LOW

VERY_LOW

public static final JobPriority VERY_LOW

DEFAULT

public static final JobPriority DEFAULT

UNDEFINED_PRIORITY

public static final JobPriority UNDEFINED_PRIORITY

Method Detail

values

public static JobPriority[] 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 (JobPriority c : JobPriority.values())
    System.out.println(c);

Returns:

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

valueOf

public static JobPriority 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