Package org.apache.flink.runtime.operators.shipping

Enum ShipStrategyType

java.lang.Object

java.lang.Enum<ShipStrategyType>

org.apache.flink.runtime.operators.shipping.ShipStrategyType

All Implemented Interfaces:

Serializable, Comparable<ShipStrategyType>

public enum ShipStrategyType
extends Enum<ShipStrategyType>

Enumeration defining the different shipping types of the output, such as local forward, re-partitioning by hash, or re-partitioning by range.

Enum Constant Summary

Enum Constants

Enum Constant	Description
BROADCAST	Replicating the data set to all instances.
FORWARD	Forwarding the data locally in memory.
NONE	Constant used as an indicator for an unassigned ship strategy.
PARTITION_CUSTOM	Partitioning using a custom partitioner.
PARTITION_FORCED_REBALANCE	Partitioning the data evenly, forced at a specific location (cannot be pushed down by optimizer).
PARTITION_HASH	Repartitioning the data deterministically through a hash function.
PARTITION_RANDOM	Repartitioning the data randomly, typically when the parallelism between two nodes changes.
PARTITION_RANGE	Partitioning the data in ranges according to a total order.

Method Summary

Modifier and Type	Method	Description
boolean	isNetworkStrategy()
boolean	requiresComparator()
static ShipStrategyType	valueOf(String name)	Returns the enum constant of this type with the specified name.
static ShipStrategyType[]	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 ShipStrategyType NONE

Constant used as an indicator for an unassigned ship strategy.

FORWARD

public static final ShipStrategyType FORWARD

Forwarding the data locally in memory.

PARTITION_RANDOM

public static final ShipStrategyType PARTITION_RANDOM

Repartitioning the data randomly, typically when the parallelism between two nodes changes.

PARTITION_HASH

public static final ShipStrategyType PARTITION_HASH

Repartitioning the data deterministically through a hash function.

PARTITION_RANGE

public static final ShipStrategyType PARTITION_RANGE

Partitioning the data in ranges according to a total order.

PARTITION_FORCED_REBALANCE

public static final ShipStrategyType PARTITION_FORCED_REBALANCE

Partitioning the data evenly, forced at a specific location (cannot be pushed down by optimizer).

BROADCAST

public static final ShipStrategyType BROADCAST

Replicating the data set to all instances.

PARTITION_CUSTOM

public static final ShipStrategyType PARTITION_CUSTOM

Partitioning using a custom partitioner.

Method Detail

values

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

Returns:

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

valueOf

public static ShipStrategyType 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

isNetworkStrategy

public boolean isNetworkStrategy()

requiresComparator

public boolean requiresComparator()