Package org.apache.hadoop.hdfs.server.common

Enum Class HdfsServerConstants.NamenodeRole

java.lang.Object

java.lang.Enum<HdfsServerConstants.NamenodeRole>

org.apache.hadoop.hdfs.server.common.HdfsServerConstants.NamenodeRole

All Implemented Interfaces:

Serializable, Comparable<HdfsServerConstants.NamenodeRole>, Constable

Enclosing interface:

org.apache.hadoop.hdfs.server.common.HdfsServerConstants

public static enum HdfsServerConstants.NamenodeRole
extends Enum<HdfsServerConstants.NamenodeRole>

Defines the NameNode role.

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
BACKUP
CHECKPOINT
NAMENODE

Method Summary

Modifier and Type	Method	Description
String	toString()
static HdfsServerConstants.NamenodeRole	valueOf(String name)	Returns the enum constant of this class with the specified name.
static HdfsServerConstants.NamenodeRole[]	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, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Details

NAMENODE

public static final HdfsServerConstants.NamenodeRole NAMENODE

BACKUP

public static final HdfsServerConstants.NamenodeRole BACKUP

CHECKPOINT

public static final HdfsServerConstants.NamenodeRole CHECKPOINT

Method Details

values

public static HdfsServerConstants.NamenodeRole[] 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 HdfsServerConstants.NamenodeRole 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

toString

public String toString()

Overrides:

toString in class Enum<HdfsServerConstants.NamenodeRole>