org.apache.flink.streaming.runtime.tasks

Class MultipleInputStreamTask<OUT>

java.lang.Object

org.apache.flink.runtime.jobgraph.tasks.AbstractInvokable

org.apache.flink.streaming.runtime.tasks.StreamTask<OUT,MultipleInputStreamOperator<OUT>>

org.apache.flink.streaming.runtime.tasks.MultipleInputStreamTask<OUT>

All Implemented Interfaces:

AsyncExceptionHandler

@Internal
public class MultipleInputStreamTask<OUT>
extends StreamTask<OUT,MultipleInputStreamOperator<OUT>>

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

Field Summary

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

configuration, inputProcessor, LOG, mailboxProcessor, mainOperator, operatorChain, stateBackend, timerService, TRIGGER_THREAD_GROUP

Constructor Summary

Constructors

Constructor and Description
MultipleInputStreamTask(org.apache.flink.runtime.execution.Environment env)

Method Summary

Modifier and Type	Method and Description
void	abortCheckpointOnBarrier(long checkpointId, Throwable cause)
protected void	advanceToEndOfEventTime() Emits the MAX_WATERMARK so that all registered timers are fired.
protected void	createInputProcessor(List<org.apache.flink.runtime.io.network.partition.consumer.IndexedInputGate>[] inputGates, StreamConfig.InputConfig[] inputs, WatermarkGauge[] inputWatermarkGauges)
void	init()
Future<Boolean>	triggerCheckpointAsync(org.apache.flink.runtime.checkpoint.CheckpointMetaData metadata, org.apache.flink.runtime.checkpoint.CheckpointOptions options)
void	triggerCheckpointOnBarrier(org.apache.flink.runtime.checkpoint.CheckpointMetaData checkpointMetaData, org.apache.flink.runtime.checkpoint.CheckpointOptions checkpointOptions, org.apache.flink.runtime.checkpoint.CheckpointMetricsBuilder checkpointMetrics)

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

afterInvoke, beforeInvoke, cancel, cancelTask, cleanup, cleanUpInvoke, createRecordWriterDelegate, createStreamTaskStateInitializer, declineCheckpoint, dispatchOperatorEvent, finalize, finishTask, getAsyncCheckpointStartDelayNanos, getAsyncOperationsThreadPool, getCancelables, getCheckpointStorage, getCompletionFuture, getConfiguration, getMailboxExecutorFactory, getName, getProcessingTimeServiceFactory, getStreamStatusMaintainer, handleAsyncException, invoke, isCanceled, isFailing, isMailboxLoopRunning, isRunning, notifyCheckpointAbortAsync, notifyCheckpointCompleteAsync, processInput, runMailboxLoop, runMailboxStep, setupNumRecordsInCounter, toString

Methods inherited from class org.apache.flink.runtime.jobgraph.tasks.AbstractInvokable

getCurrentNumberOfSubtasks, getEnvironment, getExecutionConfig, getIndexInSubtaskGroup, getJobConfiguration, getTaskConfiguration, getUserCodeClassLoader, setShouldInterruptOnCancel, shouldInterruptOnCancel

Methods inherited from class java.lang.Object

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

Constructor Detail

MultipleInputStreamTask

public MultipleInputStreamTask(org.apache.flink.runtime.execution.Environment env)
                        throws Exception

Throws:

Exception

Method Detail

init

public void init()
          throws Exception

Specified by:

init in class StreamTask<OUT,MultipleInputStreamOperator<OUT>>

Throws:

Exception

createInputProcessor

protected void createInputProcessor(List<org.apache.flink.runtime.io.network.partition.consumer.IndexedInputGate>[] inputGates,
                                    StreamConfig.InputConfig[] inputs,
                                    WatermarkGauge[] inputWatermarkGauges)

triggerCheckpointAsync

public Future<Boolean> triggerCheckpointAsync(org.apache.flink.runtime.checkpoint.CheckpointMetaData metadata,
                                              org.apache.flink.runtime.checkpoint.CheckpointOptions options)

Overrides:

triggerCheckpointAsync in class StreamTask<OUT,MultipleInputStreamOperator<OUT>>

triggerCheckpointOnBarrier

public void triggerCheckpointOnBarrier(org.apache.flink.runtime.checkpoint.CheckpointMetaData checkpointMetaData,
                                       org.apache.flink.runtime.checkpoint.CheckpointOptions checkpointOptions,
                                       org.apache.flink.runtime.checkpoint.CheckpointMetricsBuilder checkpointMetrics)
                                throws IOException

Overrides:

triggerCheckpointOnBarrier in class StreamTask<OUT,MultipleInputStreamOperator<OUT>>

Throws:

IOException

abortCheckpointOnBarrier

public void abortCheckpointOnBarrier(long checkpointId,
                                     Throwable cause)
                              throws IOException

Overrides:

abortCheckpointOnBarrier in class StreamTask<OUT,MultipleInputStreamOperator<OUT>>

Throws:

IOException

advanceToEndOfEventTime

protected void advanceToEndOfEventTime()
                                throws Exception

Description copied from class: StreamTask

Emits the MAX_WATERMARK so that all registered timers are fired.

This is used by the source task when the job is TERMINATED. In the case, we want all the timers registered throughout the pipeline to fire and the related state (e.g. windows) to be flushed.

For tasks other than the source task, this method does nothing.

Overrides:

advanceToEndOfEventTime in class StreamTask<OUT,MultipleInputStreamOperator<OUT>>

Throws:

Exception