org.apache.flink.streaming.runtime.partitioner

Class CustomPartitionerWrapper<K,T>

java.lang.Object

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

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

Type Parameters:

K - Type of the key

T - Type of the data

All Implemented Interfaces:

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

@Internal
public class CustomPartitionerWrapper<K,T>
extends StreamPartitioner<T>

Partitioner that selects the channel with a user defined partitioner function on a key.

See Also:

Serialized Form

Field Summary

Fields inherited from class org.apache.flink.streaming.runtime.partitioner.StreamPartitioner

numberOfChannels

Constructor Summary

Constructors

Constructor and Description
CustomPartitionerWrapper(org.apache.flink.api.common.functions.Partitioner<K> partitioner, org.apache.flink.api.java.functions.KeySelector<T,K> keySelector)

Method Summary

Modifier and Type	Method and Description
StreamPartitioner<T>	copy()
org.apache.flink.runtime.io.network.api.writer.SubtaskStateMapper	getDownstreamSubtaskStateMapper() Defines the behavior of this partitioner, when downstream rescaled during recovery of in-flight data.
boolean	isPointwise()
int	selectChannel(org.apache.flink.runtime.plugable.SerializationDelegate<StreamRecord<T>> record)
String	toString()

Methods inherited from class org.apache.flink.streaming.runtime.partitioner.StreamPartitioner

equals, getUpstreamSubtaskStateMapper, hashCode, isBroadcast, setup

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

CustomPartitionerWrapper

public CustomPartitionerWrapper(org.apache.flink.api.common.functions.Partitioner<K> partitioner,
                                org.apache.flink.api.java.functions.KeySelector<T,K> keySelector)

Method Detail

selectChannel

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

getDownstreamSubtaskStateMapper

public org.apache.flink.runtime.io.network.api.writer.SubtaskStateMapper getDownstreamSubtaskStateMapper()

Description copied from class: StreamPartitioner

Defines the behavior of this partitioner, when downstream rescaled during recovery of in-flight data.

Specified by:

getDownstreamSubtaskStateMapper in class StreamPartitioner<T>

copy

public StreamPartitioner<T> copy()

Specified by:

copy in class StreamPartitioner<T>

isPointwise

public boolean isPointwise()

Specified by:

isPointwise in class StreamPartitioner<T>

toString

public String toString()

Overrides:

toString in class Object