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

Enum FederationNamenodeServiceState

java.lang.Object

java.lang.Enum<FederationNamenodeServiceState>

org.apache.hadoop.hdfs.server.federation.resolver.FederationNamenodeServiceState

All Implemented Interfaces:

java.io.Serializable, java.lang.Comparable<FederationNamenodeServiceState>

public enum FederationNamenodeServiceState
extends java.lang.Enum<FederationNamenodeServiceState>

Namenode state in the federation. The order of this enum is used to evaluate NN priority for RPC calls.

Enum Constant Summary

Enum Constants

Enum Constant	Description
ACTIVE
DISABLED
EXPIRED
OBSERVER
STANDBY
UNAVAILABLE

Method Summary

Modifier and Type	Method	Description
static FederationNamenodeServiceState	getState(org.apache.hadoop.ha.HAServiceProtocol.HAServiceState state)
static FederationNamenodeServiceState	valueOf(java.lang.String name)	Returns the enum constant of this type with the specified name.
static FederationNamenodeServiceState[]	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

ACTIVE

public static final FederationNamenodeServiceState ACTIVE

OBSERVER

public static final FederationNamenodeServiceState OBSERVER

STANDBY

public static final FederationNamenodeServiceState STANDBY

UNAVAILABLE

public static final FederationNamenodeServiceState UNAVAILABLE

EXPIRED

public static final FederationNamenodeServiceState EXPIRED

DISABLED

public static final FederationNamenodeServiceState DISABLED

Method Detail

values

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

Returns:

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

valueOf

public static FederationNamenodeServiceState valueOf(java.lang.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:

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

java.lang.NullPointerException - if the argument is null

getState

public static FederationNamenodeServiceState getState(org.apache.hadoop.ha.HAServiceProtocol.HAServiceState state)