org.apache.flink.streaming.runtime.partitioner

Class BroadcastPartitioner<T>

java.lang.Object

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

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

Type Parameters:

T - Type of the elements in the Stream being broadcast

All Implemented Interfaces:

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

@Internal
public class BroadcastPartitioner<T>
extends StreamPartitioner<T>

Partitioner that selects all the output channels.

See Also:

Serialized Form

Field Summary

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

numberOfChannels

Constructor Summary

Constructors

Constructor and Description
BroadcastPartitioner()

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.
org.apache.flink.runtime.io.network.api.writer.SubtaskStateMapper	getUpstreamSubtaskStateMapper() Defines the behavior of this partitioner, when upstream rescaled during recovery of in-flight data.
boolean	isBroadcast()
boolean	isPointwise()
int	selectChannel(org.apache.flink.runtime.plugable.SerializationDelegate<StreamRecord<T>> record) Note: Broadcast mode could be handled directly for all the output channels in record writer, so it is no need to select channels via this method.
String	toString()

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

equals, hashCode, setup

Methods inherited from class java.lang.Object

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

Constructor Detail

BroadcastPartitioner

public BroadcastPartitioner()

Method Detail

selectChannel

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

Note: Broadcast mode could be handled directly for all the output channels in record writer, so it is no need to select channels via this method.

getUpstreamSubtaskStateMapper

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

Description copied from class: StreamPartitioner

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

Overrides:

getUpstreamSubtaskStateMapper in class StreamPartitioner<T>

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>

isBroadcast

public boolean isBroadcast()

Specified by:

isBroadcast in interface org.apache.flink.runtime.io.network.api.writer.ChannelSelector<org.apache.flink.runtime.plugable.SerializationDelegate<StreamRecord<T>>>

Overrides:

isBroadcast 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