Package org.apache.flink.table.api.config

Enum ExecutionConfigOptions.SinkUpsertMaterializeStrategy

java.lang.Object

java.lang.Enum<ExecutionConfigOptions.SinkUpsertMaterializeStrategy>

org.apache.flink.table.api.config.ExecutionConfigOptions.SinkUpsertMaterializeStrategy

All Implemented Interfaces:

Serializable, Comparable<ExecutionConfigOptions.SinkUpsertMaterializeStrategy>

Enclosing class:

ExecutionConfigOptions

@PublicEvolving
public static enum ExecutionConfigOptions.SinkUpsertMaterializeStrategy
extends Enum<ExecutionConfigOptions.SinkUpsertMaterializeStrategy>

SinkUpsertMaterializer strategy.

Enum Constant Summary

Enum Constants

Enum Constant	Description
ADAPTIVE	Alternate between MAP and VALUE depending on the number of entries for the given key starting with VALUE and switching to MAP upon reaching threshold.high value (and back to VALUE, when reaching low).
LEGACY	Simple implementation based on ValueState<List> (the original implementation).
MAP	OrderedMultiSetState-based implementation based on a combination of several MapState maintaining ordering and fast lookup properties.
VALUE	Similar to LEGACY, but compatible with MAP and therefore allows to switch to ADAPTIVE.

Method Summary

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

LEGACY

public static final ExecutionConfigOptions.SinkUpsertMaterializeStrategy LEGACY

Simple implementation based on ValueState<List> (the original implementation).

• optimal for cases with history under approx. 100 elements
• limited TTL support (per key granularity, i.e. no expiration for old history elements)

MAP

public static final ExecutionConfigOptions.SinkUpsertMaterializeStrategy MAP

OrderedMultiSetState-based implementation based on a combination of several MapState maintaining ordering and fast lookup properties.

• faster and more memory-efficient on long histories
• slower on short histories
• currently, no TTL support (to be added in the future)
• requires more space

VALUE

public static final ExecutionConfigOptions.SinkUpsertMaterializeStrategy VALUE

Similar to LEGACY, but compatible with MAP and therefore allows to switch to ADAPTIVE.

ADAPTIVE

public static final ExecutionConfigOptions.SinkUpsertMaterializeStrategy ADAPTIVE

Alternate between MAP and VALUE depending on the number of entries for the given key starting with VALUE and switching to MAP upon reaching threshold.high value (and back to VALUE, when reaching low).

Method Detail

values

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

Returns:

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

valueOf

public static ExecutionConfigOptions.SinkUpsertMaterializeStrategy 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