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

枚举 ExecEdge.Shuffle.Type

java.lang.Object

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

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

所有已实现的接口:

Serializable, Comparable<ExecEdge.Shuffle.Type>

封闭类:

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.

枚举常量概要

枚举常量

枚举常量和说明
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.

方法概要

限定符和类型	方法和说明
static ExecEdge.Shuffle.Type	valueOf(String name) 返回带有指定名称的该类型的枚举常量。
static ExecEdge.Shuffle.Type[]	values() 按照声明该枚举类型的常量的顺序, 返回 包含这些常量的数组。

从类继承的方法 java.lang.Enum

clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

从类继承的方法 java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

枚举常量详细资料

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).

方法详细资料

values

public static ExecEdge.Shuffle.Type[] values()

按照声明该枚举类型的常量的顺序, 返回 包含这些常量的数组。该方法可用于迭代 常量, 如下所示:

for (ExecEdge.Shuffle.Type c : ExecEdge.Shuffle.Type.values())
    System.out.println(c);

返回:

按照声明该枚举类型的常量的顺序返回的包含这些常量的数组

valueOf

public static ExecEdge.Shuffle.Type valueOf(String name)

返回带有指定名称的该类型的枚举常量。 字符串必须与用于声明该类型的枚举常量的 标识符完全匹配。(不允许有多余 的空格字符。)

参数:

name - 要返回的枚举常量的名称。

返回:

返回带有指定名称的枚举常量

抛出:

IllegalArgumentException - 如果该枚举类型没有带有指定名称的常量

NullPointerException - 如果参数为空值