org.apache.flink.streaming.runtime.tasks

Class TwoInputStreamTask<IN1,IN2,OUT>

java.lang.Object

org.apache.flink.streaming.runtime.tasks.StreamTask<OUT,TwoInputStreamOperator<IN1,IN2,OUT>>

org.apache.flink.streaming.runtime.tasks.AbstractTwoInputStreamTask<IN1,IN2,OUT>

org.apache.flink.streaming.runtime.tasks.TwoInputStreamTask<IN1,IN2,OUT>

All Implemented Interfaces:

CheckpointableTask, CoordinatedTask, TaskInvokable, AsyncExceptionHandler, ContainingTaskDetails

@Internal
public class TwoInputStreamTask<IN1,IN2,OUT>
extends AbstractTwoInputStreamTask<IN1,IN2,OUT>

A StreamTask for executing a TwoInputStreamOperator and supporting the TwoInputStreamOperator to select input for reading.

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.flink.streaming.runtime.tasks.StreamTask

StreamTask.CanEmitBatchOfRecordsChecker

Field Summary

Fields inherited from class org.apache.flink.streaming.runtime.tasks.AbstractTwoInputStreamTask

input1WatermarkGauge, input2WatermarkGauge, minInputWatermarkGauge

Fields inherited from class org.apache.flink.streaming.runtime.tasks.StreamTask

checkpointStorage, configuration, inputProcessor, LOG, mailboxProcessor, mainOperator, operatorChain, recordWriter, stateBackend, systemTimerService, timerService, TRIGGER_THREAD_GROUP

Constructor Summary

Constructors

Constructor and Description
TwoInputStreamTask(Environment env)

Method Summary

Modifier and Type	Method and Description
protected void	createInputProcessor(List<IndexedInputGate> inputGates1, List<IndexedInputGate> inputGates2, Function<Integer,StreamPartitioner<?>> gatePartitioners)
StreamTask.CanEmitBatchOfRecordsChecker	getCanEmitBatchOfRecords()
protected Optional<CheckpointBarrierHandler>	getCheckpointBarrierHandler() Acquires the optional CheckpointBarrierHandler associated with this stream task.

Methods inherited from class org.apache.flink.streaming.runtime.tasks.AbstractTwoInputStreamTask

init

Methods inherited from class org.apache.flink.streaming.runtime.tasks.StreamTask

abortCheckpointOnBarrier, advanceToEndOfEventTime, afterInvoke, cancel, cancelTask, cleanUp, cleanUpInternal, createRecordWriterDelegate, createStreamTaskStateInitializer, declineCheckpoint, dispatchOperatorEvent, endData, finalize, getAsyncCheckpointStartDelayNanos, getAsyncOperationsThreadPool, getCancelables, getCheckpointStorage, getCompletionFuture, getConfiguration, getEnvironment, getMailboxExecutorFactory, getName, getProcessingTimeServiceFactory, handleAsyncException, invoke, isCanceled, isFailing, isMailboxLoopRunning, isRunning, isUsingNonBlockingInput, maybeInterruptOnCancel, notifyCheckpointAbortAsync, notifyCheckpointCompleteAsync, notifyCheckpointSubsumedAsync, notifyEndOfData, processInput, restore, runMailboxLoop, runMailboxStep, setSynchronousSavepoint, setupNumRecordsInCounter, toString, triggerCheckpointAsync, triggerCheckpointOnBarrier

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.flink.streaming.runtime.tasks.ContainingTaskDetails

getExecutionConfig, getIndexInSubtaskGroup, getJobConfiguration, getUserCodeClassLoader

Constructor Detail

TwoInputStreamTask

public TwoInputStreamTask(Environment env)
                   throws Exception

Throws:

Exception

Method Detail

getCheckpointBarrierHandler

protected Optional<CheckpointBarrierHandler> getCheckpointBarrierHandler()

Description copied from class: StreamTask

Acquires the optional CheckpointBarrierHandler associated with this stream task. The CheckpointBarrierHandler should exist if the task has data inputs and requires to align the barriers.

Overrides:

getCheckpointBarrierHandler in class StreamTask<OUT,TwoInputStreamOperator<IN1,IN2,OUT>>

createInputProcessor

protected void createInputProcessor(List<IndexedInputGate> inputGates1,
                                    List<IndexedInputGate> inputGates2,
                                    Function<Integer,StreamPartitioner<?>> gatePartitioners)

Specified by:

createInputProcessor in class AbstractTwoInputStreamTask<IN1,IN2,OUT>

getCanEmitBatchOfRecords

public StreamTask.CanEmitBatchOfRecordsChecker getCanEmitBatchOfRecords()

Overrides:

getCanEmitBatchOfRecords in class StreamTask<OUT,TwoInputStreamOperator<IN1,IN2,OUT>>