org.apache.flink.streaming.runtime.operators.asyncprocessing

类 AbstractAsyncStateStreamOperatorV2<OUT>

java.lang.Object

org.apache.flink.streaming.api.operators.AbstractStreamOperatorV2<OUT>

org.apache.flink.streaming.runtime.operators.asyncprocessing.AbstractAsyncStateStreamOperatorV2<OUT>

所有已实现的接口:

Serializable, org.apache.flink.api.common.state.CheckpointListener, KeyContext, StreamOperator<OUT>, StreamOperatorStateHandler.CheckpointedStreamOperator, AsyncStateProcessing, AsyncStateProcessingOperator

@Internal
public abstract class AbstractAsyncStateStreamOperatorV2<OUT>
extends AbstractStreamOperatorV2<OUT>
implements AsyncStateProcessingOperator

This operator is an abstract class that give the AbstractStreamOperatorV2 the ability to perform AsyncStateProcessing. The aim is to make any subclass of AbstractStreamOperatorV2 could manipulate async state with only a change of base class.

另请参阅:

序列化表格

字段概要

从类继承的字段 org.apache.flink.streaming.api.operators.AbstractStreamOperatorV2

combinedWatermark, config, lastRecordAttributes, latencyStats, LOG, metrics, output, processingTimeService, stateHandler, timeServiceManager

构造器概要

构造器

构造器和说明
AbstractAsyncStateStreamOperatorV2(StreamOperatorParameters<OUT> parameters, int numberOfInputs)

方法概要

限定符和类型	方法和说明
ElementOrder	getElementOrder() Get the ElementOrder of this operator.
<K,N> InternalTimerService<N>	getInternalTimerService(String name, org.apache.flink.api.common.typeutils.TypeSerializer<N> namespaceSerializer, Triggerable<K,N> triggerable) Returns a InternalTimerService that can be used to query current processing time and event time and to set timers.
<T> org.apache.flink.util.function.ThrowingConsumer<StreamRecord<T>,Exception>	getRecordProcessor(int inputId) Get the record processor that could process record from input, which is the only entry for async processing.
void	initializeState(StreamTaskStateInitializer streamTaskStateManager) Initialize necessary state components for AbstractStreamOperatorV2.
boolean	isAsyncStateProcessingEnabled() Get if the async state processing is enabled for this input/operator.
void	postProcessElement() A callback that will be triggered after an element finishes processElement.
void	preserveRecordOrderAndProcess(org.apache.flink.util.function.ThrowingRunnable<Exception> processing) Check the order of same-key record, and then process the record.
void	processWatermark(Watermark mark)
void	processWatermarkStatus(WatermarkStatus watermarkStatus, int inputId)
<T> void	setAsyncKeyedContextElement(StreamRecord<T> record, org.apache.flink.api.java.functions.KeySelector<T,?> keySelector) Set key context for async state processing.
OperatorSnapshotFutures	snapshotState(long checkpointId, long timestamp, org.apache.flink.runtime.checkpoint.CheckpointOptions checkpointOptions, org.apache.flink.runtime.state.CheckpointStreamFactory factory) Called to draw a state snapshot from the operator.

从类继承的方法 org.apache.flink.streaming.api.operators.AbstractStreamOperatorV2

close, finish, getCurrentKey, getExecutionConfig, getKeyedStateBackend, getKeyedStateStore, getMetricGroup, getOperatorConfig, getOperatorID, getOperatorName, getOperatorStateBackend, getOrCreateKeyedState, getPartitionedState, getPartitionedState, getProcessingTimeService, getRuntimeContext, getTimeServiceManager, getUserCodeClassloader, initializeState, internalSetKeyContextElement, isUsingCustomRawKeyedState, notifyCheckpointAborted, notifyCheckpointComplete, open, prepareSnapshotPreBarrier, processRecordAttributes, reportOrForwardLatencyMarker, reportWatermark, setCurrentKey, setKeyContextElement1, setKeyContextElement2, snapshotState, useSplittableTimers

从类继承的方法 java.lang.Object

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

从接口继承的方法 org.apache.flink.streaming.runtime.operators.asyncprocessing.AsyncStateProcessing

makeRecordProcessor

从接口继承的方法 org.apache.flink.streaming.api.operators.StreamOperator

getOperatorAttributes

构造器详细资料

AbstractAsyncStateStreamOperatorV2

public AbstractAsyncStateStreamOperatorV2(StreamOperatorParameters<OUT> parameters,
                                          int numberOfInputs)

方法详细资料

initializeState

public final void initializeState(StreamTaskStateInitializer streamTaskStateManager)
                           throws Exception

Initialize necessary state components for AbstractStreamOperatorV2.

指定者:

initializeState 在接口中 StreamOperator<OUT>

覆盖:

initializeState 在类中 AbstractStreamOperatorV2<OUT>

抛出:

Exception

isAsyncStateProcessingEnabled

public boolean isAsyncStateProcessingEnabled()

从接口复制的说明: AsyncStateProcessing

Get if the async state processing is enabled for this input/operator.

指定者:

isAsyncStateProcessingEnabled 在接口中 AsyncStateProcessing

返回:

ture if async state processing is enabled.

getElementOrder

public ElementOrder getElementOrder()

从接口复制的说明: AsyncStateProcessingOperator

Get the ElementOrder of this operator.

指定者:

getElementOrder 在接口中 AsyncStateProcessingOperator

setAsyncKeyedContextElement

public final <T> void setAsyncKeyedContextElement(StreamRecord<T> record,
                                                  org.apache.flink.api.java.functions.KeySelector<T,?> keySelector)
                                           throws Exception

从接口复制的说明: AsyncStateProcessingOperator

Set key context for async state processing.

指定者:

setAsyncKeyedContextElement 在接口中 AsyncStateProcessingOperator

类型参数:

T - the type of the record.

参数:

record - the record.

keySelector - the key selector to select a key from record.

抛出:

Exception

postProcessElement

public final void postProcessElement()

从接口复制的说明: AsyncStateProcessingOperator

A callback that will be triggered after an element finishes processElement.

指定者:

postProcessElement 在接口中 AsyncStateProcessingOperator

preserveRecordOrderAndProcess

public final void preserveRecordOrderAndProcess(org.apache.flink.util.function.ThrowingRunnable<Exception> processing)

从接口复制的说明: AsyncStateProcessingOperator

Check the order of same-key record, and then process the record. Mainly used when the AsyncStateProcessingOperator.getElementOrder() returns ElementOrder.RECORD_ORDER.

指定者:

preserveRecordOrderAndProcess 在接口中 AsyncStateProcessingOperator

参数:

processing - the record processing logic.

getRecordProcessor

public final <T> org.apache.flink.util.function.ThrowingConsumer<StreamRecord<T>,Exception> getRecordProcessor(int inputId)

从接口复制的说明: AsyncStateProcessing

Get the record processor that could process record from input, which is the only entry for async processing.

指定者:

getRecordProcessor 在接口中 AsyncStateProcessing

参数:

inputId - the input identifier, start from 1. Borrow the design from org.apache.flink.streaming.api.operators.AbstractInput#inputId. This is only relevant if there is multiple inputs for the instance.

snapshotState

public final OperatorSnapshotFutures snapshotState(long checkpointId,
                                                   long timestamp,
                                                   org.apache.flink.runtime.checkpoint.CheckpointOptions checkpointOptions,
                                                   org.apache.flink.runtime.state.CheckpointStreamFactory factory)
                                            throws Exception

从接口复制的说明: StreamOperator

Called to draw a state snapshot from the operator.

指定者:

snapshotState 在接口中 StreamOperator<OUT>

覆盖:

snapshotState 在类中 AbstractStreamOperatorV2<OUT>

返回:

a runnable future to the state handle that points to the snapshotted state. For synchronous implementations, the runnable might already be finished.

抛出:

Exception - exception that happened during snapshotting.

getInternalTimerService

public <K,N> InternalTimerService<N> getInternalTimerService(String name,
                                                             org.apache.flink.api.common.typeutils.TypeSerializer<N> namespaceSerializer,
                                                             Triggerable<K,N> triggerable)

从类复制的说明: AbstractStreamOperatorV2

Returns a InternalTimerService that can be used to query current processing time and event time and to set timers. An operator can have several timer services, where each has its own namespace serializer. Timer services are differentiated by the string key that is given when requesting them, if you call this method with the same key multiple times you will get the same timer service instance in subsequent requests.

Timers are always scoped to a key, the currently active key of a keyed stream operation. When a timer fires, this key will also be set as the currently active key.

Each timer has attached metadata, the namespace. Different timer services can have a different namespace type. If you don't need namespace differentiation you can use VoidNamespaceSerializer as the namespace serializer.

覆盖:

getInternalTimerService 在类中 AbstractStreamOperatorV2<OUT>

N - The type of the timer namespace.

参数:

name - The name of the requested timer service. If no service exists under the given name a new one will be created and returned.

namespaceSerializer - TypeSerializer for the timer namespace.

triggerable - The Triggerable that should be invoked when timers fire

processWatermark

public void processWatermark(Watermark mark)
                      throws Exception

覆盖:

processWatermark 在类中 AbstractStreamOperatorV2<OUT>

抛出:

Exception

processWatermarkStatus

public void processWatermarkStatus(WatermarkStatus watermarkStatus,
                                   int inputId)
                            throws Exception

覆盖:

processWatermarkStatus 在类中 AbstractStreamOperatorV2<OUT>

抛出:

Exception