Package org.apache.hadoop.hdfs.server.federation.resolver.order

Enum Class DestinationOrder

java.lang.Object

java.lang.Enum<DestinationOrder>

org.apache.hadoop.hdfs.server.federation.resolver.order.DestinationOrder

All Implemented Interfaces:

Serializable, Comparable<DestinationOrder>, Constable

public enum DestinationOrder
extends Enum<DestinationOrder>

Order of the destinations when we have multiple of them. When the resolver of files to subclusters (FileSubclusterResolver) has multiple destinations, this determines which location should be checked first.

Nested Class Summary

Nested classes/interfaces inherited from class java.lang.Enum

Enum.EnumDesc<E extends Enum<E>>

Enum Constant Summary

Enum Constants

Enum Constant	Description
HASH
HASH_ALL
LEADER_FOLLOWER
LOCAL
RANDOM
SPACE

Field Summary

Fields

Modifier and Type	Field	Description
static final EnumSet<DestinationOrder>	FOLDER_ALL	Approaches that write folders in all subclusters.

Method Summary

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

Methods inherited from class java.lang.Enum

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

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Details

HASH

public static final DestinationOrder HASH

LOCAL

public static final DestinationOrder LOCAL

RANDOM

public static final DestinationOrder RANDOM

HASH_ALL

public static final DestinationOrder HASH_ALL

SPACE

public static final DestinationOrder SPACE

LEADER_FOLLOWER

public static final DestinationOrder LEADER_FOLLOWER

Field Details

FOLDER_ALL

public static final EnumSet<DestinationOrder> FOLDER_ALL

Approaches that write folders in all subclusters.

Method Details

values

public static DestinationOrder[] values()

Returns an array containing the constants of this enum class, in the order they are declared.

Returns:

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

valueOf

public static DestinationOrder valueOf(String name)

Returns the enum constant of this class with the specified name. The string must match exactly an identifier used to declare an enum constant in this class. (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 class has no constant with the specified name

NullPointerException - if the argument is null