org.apache.flink.runtime.jobmanager

Enum HighAvailabilityMode

java.lang.Object

java.lang.Enum<HighAvailabilityMode>

org.apache.flink.runtime.jobmanager.HighAvailabilityMode

All Implemented Interfaces:

Serializable, Comparable<HighAvailabilityMode>

public enum HighAvailabilityMode
extends Enum<HighAvailabilityMode>

High availability mode for Flink's cluster execution. Currently supported modes are:

- NONE: No high availability. - ZooKeeper: JobManager high availability via ZooKeeper ZooKeeper is used to select a leader among a group of JobManager. This JobManager is responsible for the job execution. Upon failure of the leader a new leader is elected which will take over the responsibilities of the old leader - FACTORY_CLASS: Use implementation of HighAvailabilityServicesFactory specified in configuration property high-availability

Enum Constant Summary

Enum Constants

Enum Constant and Description
FACTORY_CLASS
NONE
ZOOKEEPER

Method Summary

Modifier and Type	Method and Description
static HighAvailabilityMode	fromConfig(Configuration config) Return the configured HighAvailabilityMode.
static boolean	isHighAvailabilityModeActivated(Configuration configuration) Returns true if the defined recovery mode supports high availability.
static HighAvailabilityMode	valueOf(String name) Returns the enum constant of this type with the specified name.
static HighAvailabilityMode[]	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

NONE

public static final HighAvailabilityMode NONE

ZOOKEEPER

public static final HighAvailabilityMode ZOOKEEPER

FACTORY_CLASS

public static final HighAvailabilityMode FACTORY_CLASS

Method Detail

values

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

Returns:

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

valueOf

public static HighAvailabilityMode 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

fromConfig

public static HighAvailabilityMode fromConfig(Configuration config)

Return the configured HighAvailabilityMode.

Parameters:

config - The config to parse

Returns:

Configured recovery mode or NONE if not configured.

isHighAvailabilityModeActivated

public static boolean isHighAvailabilityModeActivated(Configuration configuration)

Returns true if the defined recovery mode supports high availability.

Parameters:

configuration - Configuration which contains the recovery mode

Returns:

true if high availability is supported by the recovery mode, otherwise false