org.apache.flink.streaming.connectors.kafka.config

枚举 StartupMode

java.lang.Object

java.lang.Enum<StartupMode>

org.apache.flink.streaming.connectors.kafka.config.StartupMode

所有已实现的接口:

Serializable, Comparable<StartupMode>

@Internal
public enum StartupMode
extends Enum<StartupMode>

Startup modes for the Kafka Consumer.

枚举常量概要

枚举常量

枚举常量和说明
EARLIEST Start from the earliest offset possible.
GROUP_OFFSETS Start from committed offsets in ZK / Kafka brokers of a specific consumer group (default).
LATEST Start from the latest offset.
SPECIFIC_OFFSETS Start from user-supplied specific offsets for each partition.
TIMESTAMP Start from user-supplied timestamp for each partition.

方法概要

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

GROUP_OFFSETS

public static final StartupMode GROUP_OFFSETS

Start from committed offsets in ZK / Kafka brokers of a specific consumer group (default).

EARLIEST

public static final StartupMode EARLIEST

Start from the earliest offset possible.

LATEST

public static final StartupMode LATEST

Start from the latest offset.

TIMESTAMP

public static final StartupMode TIMESTAMP

Start from user-supplied timestamp for each partition. Since this mode will have specific offsets to start with, we do not need a sentinel value; using Long.MIN_VALUE as a placeholder.

SPECIFIC_OFFSETS

public static final StartupMode SPECIFIC_OFFSETS

Start from user-supplied specific offsets for each partition. Since this mode will have specific offsets to start with, we do not need a sentinel value; using Long.MIN_VALUE as a placeholder.

方法详细资料

values

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

getStateSentinel

public long getStateSentinel()