org.apache.flink.streaming.runtime.partitioner

类 KeyGroupStreamPartitioner<T,K>

java.lang.Object

org.apache.flink.streaming.runtime.partitioner.StreamPartitioner<T>

org.apache.flink.streaming.runtime.partitioner.KeyGroupStreamPartitioner<T,K>

类型参数:

T - Type of the elements in the Stream being partitioned

所有已实现的接口:

Serializable, org.apache.flink.runtime.io.network.api.writer.ChannelSelector<org.apache.flink.runtime.plugable.SerializationDelegate<StreamRecord<T>>>, ConfigurableStreamPartitioner

@Internal
public class KeyGroupStreamPartitioner<T,K>
extends StreamPartitioner<T>
implements ConfigurableStreamPartitioner

Partitioner selects the target channel based on the key group index.

另请参阅:

序列化表格

字段概要

从类继承的字段 org.apache.flink.streaming.runtime.partitioner.StreamPartitioner

numberOfChannels

构造器概要

构造器

构造器和说明
KeyGroupStreamPartitioner(org.apache.flink.api.java.functions.KeySelector<T,K> keySelector, int maxParallelism)

方法概要

限定符和类型	方法和说明
void	configure(int maxParallelism) Configure the StreamPartitioner with the maximum parallelism of the down stream operator.
StreamPartitioner<T>	copy()
int	getMaxParallelism()
int	selectChannel(org.apache.flink.runtime.plugable.SerializationDelegate<StreamRecord<T>> record)
String	toString()

从类继承的方法 org.apache.flink.streaming.runtime.partitioner.StreamPartitioner

isBroadcast, setup

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

构造器详细资料

KeyGroupStreamPartitioner

public KeyGroupStreamPartitioner(org.apache.flink.api.java.functions.KeySelector<T,K> keySelector,
                                 int maxParallelism)

方法详细资料

getMaxParallelism

public int getMaxParallelism()

selectChannel

public int selectChannel(org.apache.flink.runtime.plugable.SerializationDelegate<StreamRecord<T>> record)

指定者:

selectChannel 在接口中 org.apache.flink.runtime.io.network.api.writer.ChannelSelector<org.apache.flink.runtime.plugable.SerializationDelegate<StreamRecord<T>>>

copy

public StreamPartitioner<T> copy()

指定者:

copy 在类中 StreamPartitioner<T>

toString

public String toString()

覆盖:

toString 在类中 Object

configure

public void configure(int maxParallelism)

从接口复制的说明: ConfigurableStreamPartitioner

Configure the StreamPartitioner with the maximum parallelism of the down stream operator.

指定者:

configure 在接口中 ConfigurableStreamPartitioner

参数:

maxParallelism - Maximum parallelism of the down stream operator.