org.apache.flink.runtime.checkpoint

枚举 CheckpointRetentionPolicy

java.lang.Object

java.lang.Enum<CheckpointRetentionPolicy>

org.apache.flink.runtime.checkpoint.CheckpointRetentionPolicy

所有已实现的接口:

Serializable, Comparable<CheckpointRetentionPolicy>

@Internal
public enum CheckpointRetentionPolicy
extends Enum<CheckpointRetentionPolicy>

Policy for whether checkpoints are retained after a job terminates.

枚举常量概要

枚举常量

枚举常量和说明
NEVER_RETAIN_AFTER_TERMINATION Checkpoints should always be cleaned up when an application reaches a terminal state.
RETAIN_ON_CANCELLATION Checkpoints should be retained on cancellation and failure.
RETAIN_ON_FAILURE Checkpoints should be retained on failure, but not on cancellation.

方法概要

限定符和类型	方法和说明
static CheckpointRetentionPolicy	valueOf(String name) 返回带有指定名称的该类型的枚举常量。
static CheckpointRetentionPolicy[]	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

RETAIN_ON_CANCELLATION

public static final CheckpointRetentionPolicy RETAIN_ON_CANCELLATION

Checkpoints should be retained on cancellation and failure.

RETAIN_ON_FAILURE

public static final CheckpointRetentionPolicy RETAIN_ON_FAILURE

Checkpoints should be retained on failure, but not on cancellation.

NEVER_RETAIN_AFTER_TERMINATION

public static final CheckpointRetentionPolicy NEVER_RETAIN_AFTER_TERMINATION

Checkpoints should always be cleaned up when an application reaches a terminal state.

方法详细资料

values

public static CheckpointRetentionPolicy[] 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 (CheckpointRetentionPolicy c : CheckpointRetentionPolicy.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 CheckpointRetentionPolicy 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