org.apache.flink.streaming.runtime.partitioner

Class StreamPartitioner<T>

java.lang.Object

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

All Implemented Interfaces:

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

Direct Known Subclasses:

BroadcastPartitioner, CustomPartitionerWrapper, ForwardPartitioner, GlobalPartitioner, KeyGroupStreamPartitioner, RebalancePartitioner, RescalePartitioner, ShufflePartitioner

@Internal
public abstract class StreamPartitioner<T>
extends Object
implements org.apache.flink.runtime.io.network.api.writer.ChannelSelector<org.apache.flink.runtime.plugable.SerializationDelegate<StreamRecord<T>>>, Serializable

A special ChannelSelector for use in streaming programs.

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
protected int	numberOfChannels

Constructor Summary

Constructors

Constructor and Description
StreamPartitioner()

Method Summary

Modifier and Type	Method and Description
abstract StreamPartitioner<T>	copy()
boolean	equals(Object o)
abstract 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.
int	hashCode()
boolean	isBroadcast()
abstract boolean	isPointwise()
void	setup(int numberOfChannels)

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.flink.runtime.io.network.api.writer.ChannelSelector

selectChannel

Field Detail

numberOfChannels

protected int numberOfChannels

Constructor Detail

StreamPartitioner

public StreamPartitioner()

Method Detail

setup

public void setup(int numberOfChannels)

Specified by:

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

copy

public abstract StreamPartitioner<T> copy()

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

getUpstreamSubtaskStateMapper

public 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.

getDownstreamSubtaskStateMapper

public abstract 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.

isPointwise

public abstract boolean isPointwise()