org.apache.flink.table.planner.plan.nodes.exec

Enum InputProperty.DistributionType

java.lang.Object

java.lang.Enum<InputProperty.DistributionType>

org.apache.flink.table.planner.plan.nodes.exec.InputProperty.DistributionType

All Implemented Interfaces:

Serializable, Comparable<InputProperty.DistributionType>

Enclosing class:

InputProperty

public static enum InputProperty.DistributionType
extends Enum<InputProperty.DistributionType>

Enumeration which describes the type of the input data distribution.

Enum Constant Summary

Enum Constants

Enum Constant and Description
ANY The input will accept any data distribution.
BROADCAST The input will read all records for each parallelism of the target node.
HASH The input will read the records whose keys hash to a particular hash value.
KEEP_INPUT_AS_IS A special distribution type which indicators the data distribution is the same as its input.
SINGLETON The input will read all records, and the parallelism of the target node must be 1.
UNKNOWN Unknown distribution type, will be filled out in the future.

Method Summary

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

ANY

public static final InputProperty.DistributionType ANY

The input will accept any data distribution.

HASH

public static final InputProperty.DistributionType HASH

The input will read the records whose keys hash to a particular hash value. A given record appears on exactly one parallelism.

BROADCAST

public static final InputProperty.DistributionType BROADCAST

The input will read all records for each parallelism of the target node. All records appear in each parallelism.

SINGLETON

public static final InputProperty.DistributionType SINGLETON

The input will read all records, and the parallelism of the target node must be 1.

KEEP_INPUT_AS_IS

public static final InputProperty.DistributionType KEEP_INPUT_AS_IS

A special distribution type which indicators the data distribution is the same as its input.

UNKNOWN

public static final InputProperty.DistributionType UNKNOWN

Unknown distribution type, will be filled out in the future.

Method Detail

values

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

Returns:

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

valueOf

public static InputProperty.DistributionType 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