Package com.linkedin.venice.meta

Enum DataReplicationPolicy

java.lang.Object

java.lang.Enum<DataReplicationPolicy>

com.linkedin.venice.meta.DataReplicationPolicy

All Implemented Interfaces:

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

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

Enums of the policies used to decide how real-time samza data is replicated.

Enum Constant Summary

Enum Constants

Enum Constant	Description
ACTIVE_ACTIVE	Samza job per colo pushes to local real-time topic.
AGGREGATE	Single Samza job or Samza job per colo pushes to real-time topic in parent colo.
NON_AGGREGATE	Default value.
NONE	This enum value is used in 2 cases: 1.

Method Summary

Modifier and Type	Method	Description
static java.util.Map<java.lang.Integer,DataReplicationPolicy>	getDataReplicationPolicyMap()
int	getValue()
static DataReplicationPolicy	valueOf(int value)	Returns the enum constant of this type with the specified name.
static DataReplicationPolicy	valueOf(java.lang.String name)	Returns the enum constant of this type with the specified name.
static DataReplicationPolicy[]	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

NON_AGGREGATE

public static final DataReplicationPolicy NON_AGGREGATE

Default value. Samza job per colo pushes to local real-time topic. Leader SNs replicate data to local version topic.

AGGREGATE

public static final DataReplicationPolicy AGGREGATE

Single Samza job or Samza job per colo pushes to real-time topic in parent colo. Leader SNs in each colo replicate data from remote real-time topic to local version topic.

NONE

public static final DataReplicationPolicy NONE

This enum value is used in 2 cases: 1. batch-only stores since it has no real-time data replication. 2. incremental push stores that do not have Samza jobs.

ACTIVE_ACTIVE

public static final DataReplicationPolicy ACTIVE_ACTIVE

Samza job per colo pushes to local real-time topic. Leader SNs replicate data from real-time topic in all colos to local version topic.

Method Detail

values

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

Returns:

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

valueOf

public static DataReplicationPolicy 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

getValue

public int getValue()

getDataReplicationPolicyMap

public static java.util.Map<java.lang.Integer,DataReplicationPolicy> getDataReplicationPolicyMap()

valueOf

public static DataReplicationPolicy valueOf(int value)

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:

value - 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