org.apache.flink.streaming.runtime.io

Class StreamTwoInputProcessor<IN1,IN2>

java.lang.Object

org.apache.flink.streaming.runtime.io.StreamTwoInputProcessor<IN1,IN2>

Type Parameters:

IN1 - The type of the records that arrive on the first input

IN2 - The type of the records that arrive on the second input

@Internal
public class StreamTwoInputProcessor<IN1,IN2>
extends Object

Input reader for TwoInputStreamTask.

This also keeps track of Watermark events and forwards them to event subscribers once the Watermark from all inputs advances.

Forwarding elements or watermarks must be protected by synchronizing on the given lock object. This ensures that we don't call methods on a TwoInputStreamOperator concurrently with the timer callback or other things.

Constructor Summary

Constructors

Constructor and Description

StreamTwoInputProcessor(Collection<org.apache.flink.runtime.io.network.partition.consumer.InputGate> inputGates1, Collection<org.apache.flink.runtime.io.network.partition.consumer.InputGate> inputGates2, org.apache.flink.api.common.typeutils.TypeSerializer<IN1> inputSerializer1, org.apache.flink.api.common.typeutils.TypeSerializer<IN2> inputSerializer2, org.apache.flink.runtime.util.event.EventListener<org.apache.flink.runtime.io.network.api.CheckpointBarrier> checkpointListener, CheckpointingMode checkpointMode, org.apache.flink.runtime.io.disk.iomanager.IOManager ioManager, boolean enableWatermarkMultiplexing)

Method Summary

Modifier and Type	Method and Description
void	cleanup()
boolean	processInput(TwoInputStreamOperator<IN1,IN2,?> streamOperator, Object lock)
void	setMetricGroup(org.apache.flink.runtime.metrics.groups.IOMetricGroup metrics) Sets the metric group for this StreamTwoInputProcessor.
void	setReporter(org.apache.flink.runtime.accumulators.AccumulatorRegistry.Reporter reporter)

Methods inherited from class java.lang.Object

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

Constructor Detail

StreamTwoInputProcessor

public StreamTwoInputProcessor(Collection<org.apache.flink.runtime.io.network.partition.consumer.InputGate> inputGates1,
                               Collection<org.apache.flink.runtime.io.network.partition.consumer.InputGate> inputGates2,
                               org.apache.flink.api.common.typeutils.TypeSerializer<IN1> inputSerializer1,
                               org.apache.flink.api.common.typeutils.TypeSerializer<IN2> inputSerializer2,
                               org.apache.flink.runtime.util.event.EventListener<org.apache.flink.runtime.io.network.api.CheckpointBarrier> checkpointListener,
                               CheckpointingMode checkpointMode,
                               org.apache.flink.runtime.io.disk.iomanager.IOManager ioManager,
                               boolean enableWatermarkMultiplexing)
                        throws IOException

Throws:

IOException

Method Detail

processInput

public boolean processInput(TwoInputStreamOperator<IN1,IN2,?> streamOperator,
                            Object lock)
                     throws Exception

Throws:

Exception

setReporter

public void setReporter(org.apache.flink.runtime.accumulators.AccumulatorRegistry.Reporter reporter)

setMetricGroup

public void setMetricGroup(org.apache.flink.runtime.metrics.groups.IOMetricGroup metrics)

Sets the metric group for this StreamTwoInputProcessor.

Parameters:

metrics - metric group

cleanup

public void cleanup()
             throws IOException

Throws:

IOException