org.apache.flink.streaming.api.transformations

类 CacheTransformation<T>

java.lang.Object

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

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

类型参数:

T - The type of the elements in the cache intermediate result.

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

When in batch mode, the CacheTransformation represents the intermediate result of the upper stream should be cached when it is computed at the first time. And it consumes the cached intermediate result in later jobs. In stream mode, it has no affect.

字段概要

从类继承的字段 org.apache.flink.api.dag.Transformation

bufferTimeout, description, id, name, outputType, typeUsed, UPPER_BOUND_MAX_PARALLELISM

构造器概要

构造器

构造器和说明
CacheTransformation(org.apache.flink.api.dag.Transformation<T> transformationToCache, String name) Creates a new Transformation with the given name, output type and parallelism.

方法概要

限定符和类型	方法和说明
org.apache.flink.util.AbstractID	getDatasetId()
List<org.apache.flink.api.dag.Transformation<?>>	getInputs()
org.apache.flink.api.dag.Transformation<T>	getTransformationToCache()
List<org.apache.flink.api.dag.Transformation<?>>	getTransitivePredecessors()
boolean	isCached()
void	setCached(boolean cached)

从类继承的方法 org.apache.flink.api.dag.Transformation

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

从类继承的方法 java.lang.Object

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

构造器详细资料

CacheTransformation

public CacheTransformation(org.apache.flink.api.dag.Transformation<T> transformationToCache,
                           String name)

Creates a new Transformation with the given name, output type and parallelism.

参数:

name - The name of the Transformation, this will be shown in Visualizations and the Log

方法详细资料

getTransitivePredecessors

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

指定者:

getTransitivePredecessors 在类中 org.apache.flink.api.dag.Transformation<T>

getInputs

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

指定者:

getInputs 在类中 org.apache.flink.api.dag.Transformation<T>

getDatasetId

public org.apache.flink.util.AbstractID getDatasetId()

getTransformationToCache

public org.apache.flink.api.dag.Transformation<T> getTransformationToCache()

setCached

public void setCached(boolean cached)

isCached

public boolean isCached()