Package org.apache.flink.api.common.state

Enum ListStateDeclaration.RedistributionStrategy

java.lang.Object

java.lang.Enum<ListStateDeclaration.RedistributionStrategy>

org.apache.flink.api.common.state.ListStateDeclaration.RedistributionStrategy

All Implemented Interfaces:

Serializable, Comparable<ListStateDeclaration.RedistributionStrategy>

Enclosing interface:

ListStateDeclaration<T>

@Experimental
public static enum ListStateDeclaration.RedistributionStrategy
extends Enum<ListStateDeclaration.RedistributionStrategy>

ListStateDeclaration.RedistributionStrategy is used to guide the assignment of states during rescaling.

Enum Constant Summary

Enum Constants

Enum Constant	Description
SPLIT	The whole state is logically a concatenation of all lists.
UNION	The whole state is logically a concatenation of all lists.

Method Summary

Modifier and Type	Method	Description
static ListStateDeclaration.RedistributionStrategy	valueOf(String name)	Returns the enum constant of this type with the specified name.
static ListStateDeclaration.RedistributionStrategy[]	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

SPLIT

public static final ListStateDeclaration.RedistributionStrategy SPLIT

The whole state is logically a concatenation of all lists. On restore/redistribution, the list is evenly divided into as many sub-lists as there are parallel operators. Each operator gets a sub-list, which can be empty, or contain one or more elements.

UNION

public static final ListStateDeclaration.RedistributionStrategy UNION

The whole state is logically a concatenation of all lists. On restore/redistribution, each operator gets the complete list of state elements.

Method Detail

values

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

Returns:

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

valueOf

public static ListStateDeclaration.RedistributionStrategy 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