org.apache.flink.streaming.api.transformations

Class PartitionTransformation<T>

java.lang.Object

org.apache.flink.api.dag.Transformation<T>

org.apache.flink.streaming.api.transformations.PartitionTransformation<T>

Type Parameters:

T - The type of the elements that result from this PartitionTransformation

@Internal
public class PartitionTransformation<T>
extends org.apache.flink.api.dag.Transformation<T>

This transformation represents a change of partitioning of the input elements.

This does not create a physical operation, it only affects how upstream operations are connected to downstream operations.

Field Summary

Fields inherited from class org.apache.flink.api.dag.Transformation

bufferTimeout, id, idCounter, name, outputType, typeUsed, UPPER_BOUND_MAX_PARALLELISM

Constructor Summary

Constructors

Constructor and Description
PartitionTransformation(org.apache.flink.api.dag.Transformation<T> input, StreamPartitioner<T> partitioner) Creates a new PartitionTransformation from the given input and StreamPartitioner.
PartitionTransformation(org.apache.flink.api.dag.Transformation<T> input, StreamPartitioner<T> partitioner, ShuffleMode shuffleMode) Creates a new PartitionTransformation from the given input and StreamPartitioner.

Method Summary

Modifier and Type	Method and Description
List<org.apache.flink.api.dag.Transformation<?>>	getInputs()
StreamPartitioner<T>	getPartitioner() Returns the StreamPartitioner that must be used for partitioning the elements of the input Transformation.
ShuffleMode	getShuffleMode() Returns the ShuffleMode of this PartitionTransformation.
List<org.apache.flink.api.dag.Transformation<?>>	getTransitivePredecessors()

Methods inherited from class org.apache.flink.api.dag.Transformation

declareManagedMemoryUseCaseAtOperatorScope, declareManagedMemoryUseCaseAtSlotScope, equals, getBufferTimeout, getCoLocationGroupKey, getId, getManagedMemoryOperatorScopeUseCaseWeights, getManagedMemorySlotScopeUseCases, getMaxParallelism, getMinResources, getName, getNewNodeId, getOutputType, getParallelism, getPreferredResources, getSlotSharingGroup, getUid, getUserProvidedNodeHash, hashCode, setBufferTimeout, setCoLocationGroupKey, setMaxParallelism, setName, setOutputType, setParallelism, setResources, setSlotSharingGroup, setUid, setUidHash, toString, updateManagedMemoryStateBackendUseCase

Methods inherited from class java.lang.Object

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

Constructor Detail

PartitionTransformation

public PartitionTransformation(org.apache.flink.api.dag.Transformation<T> input,
                               StreamPartitioner<T> partitioner)

Creates a new PartitionTransformation from the given input and StreamPartitioner.

Parameters:

input - The input Transformation

partitioner - The StreamPartitioner

PartitionTransformation

public PartitionTransformation(org.apache.flink.api.dag.Transformation<T> input,
                               StreamPartitioner<T> partitioner,
                               ShuffleMode shuffleMode)

Creates a new PartitionTransformation from the given input and StreamPartitioner.

Parameters:

input - The input Transformation

partitioner - The StreamPartitioner

shuffleMode - The ShuffleMode

Method Detail

getPartitioner

public StreamPartitioner<T> getPartitioner()

Returns the StreamPartitioner that must be used for partitioning the elements of the input Transformation.

getShuffleMode

public ShuffleMode getShuffleMode()

Returns the ShuffleMode of this PartitionTransformation.

getTransitivePredecessors

public List<org.apache.flink.api.dag.Transformation<?>> getTransitivePredecessors()

Specified by:

getTransitivePredecessors in class org.apache.flink.api.dag.Transformation<T>

getInputs

public List<org.apache.flink.api.dag.Transformation<?>> getInputs()

Specified by:

getInputs in class org.apache.flink.api.dag.Transformation<T>