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

Enum ExecEdge.Shuffle.Type

java.lang.Object

java.lang.Enum<ExecEdge.Shuffle.Type>

org.apache.flink.table.planner.plan.nodes.exec.ExecEdge.Shuffle.Type

All Implemented Interfaces:

Serializable, Comparable<ExecEdge.Shuffle.Type>

Enclosing class:

ExecEdge.Shuffle

public static enum ExecEdge.Shuffle.Type
extends Enum<ExecEdge.Shuffle.Type>

Enumeration which describes the shuffle type for records when passing this edge.

Enum Constant Summary

Enum Constants

Enum Constant	Description
ANY	Any type of shuffle is OK when passing through this edge.
BROADCAST	Full records are provided for each parallelism of the target node.
FORWARD	Records are shuffled in same parallelism (the shuffle behavior is function call).
HASH	Records are shuffled by hash when passing through this edge.
SINGLETON	Records are shuffled to one node, the parallelism of the target node must be 1.

Method Summary

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

Any type of shuffle is OK when passing through this edge.

HASH

public static final ExecEdge.Shuffle.Type HASH

Records are shuffled by hash when passing through this edge.

BROADCAST

public static final ExecEdge.Shuffle.Type BROADCAST

Full records are provided for each parallelism of the target node.

SINGLETON

public static final ExecEdge.Shuffle.Type SINGLETON

Records are shuffled to one node, the parallelism of the target node must be 1.

FORWARD

public static final ExecEdge.Shuffle.Type FORWARD

Records are shuffled in same parallelism (the shuffle behavior is function call).

Method Detail

values

public static ExecEdge.Shuffle.Type[] 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 (ExecEdge.Shuffle.Type c : ExecEdge.Shuffle.Type.values())
    System.out.println(c);

Returns:

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

valueOf

public static ExecEdge.Shuffle.Type 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