Package org.apache.flink.streaming.api.operators.python.process

Class ExternalPythonCoProcessOperator<IN1,IN2,OUT>

java.lang.Object

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

org.apache.flink.streaming.api.operators.python.AbstractPythonFunctionOperator<OUT>

org.apache.flink.streaming.api.operators.python.process.AbstractExternalPythonFunctionOperator<OUT>

org.apache.flink.streaming.api.operators.python.process.AbstractExternalDataStreamPythonFunctionOperator<OUT>

org.apache.flink.streaming.api.operators.python.process.AbstractExternalTwoInputPythonFunctionOperator<IN1,IN2,OUT>

org.apache.flink.streaming.api.operators.python.process.ExternalPythonCoProcessOperator<IN1,IN2,OUT>

Type Parameters:

IN1 - The input type of the first stream

IN2 - The input type of the second stream

OUT - The output type of the CoProcess function

All Implemented Interfaces:

Serializable, org.apache.flink.api.common.state.CheckpointListener, org.apache.flink.api.java.typeutils.ResultTypeQueryable<OUT>, org.apache.flink.streaming.api.operators.BoundedMultiInput, org.apache.flink.streaming.api.operators.KeyContext, org.apache.flink.streaming.api.operators.KeyContextHandler, DataStreamPythonFunctionOperator<OUT>, org.apache.flink.streaming.api.operators.StreamOperator<OUT>, org.apache.flink.streaming.api.operators.StreamOperatorStateHandler.CheckpointedStreamOperator, org.apache.flink.streaming.api.operators.TwoInputStreamOperator<IN1,IN2,OUT>, org.apache.flink.streaming.api.operators.YieldingOperator<OUT>

Direct Known Subclasses:

ExternalPythonBatchCoBroadcastProcessOperator

@Internal
public class ExternalPythonCoProcessOperator<IN1,IN2,OUT>
extends AbstractExternalTwoInputPythonFunctionOperator<IN1,IN2,OUT>

The ExternalPythonCoProcessOperator is responsible for executing the Python CoProcess Function.

See Also:

• Serialized Form

Field Summary

Fields inherited from class org.apache.flink.streaming.api.operators.python.process.AbstractExternalTwoInputPythonFunctionOperator

baos, baosWrapper

Fields inherited from class org.apache.flink.streaming.api.operators.python.process.AbstractExternalPythonFunctionOperator

pythonFunctionRunner

Fields inherited from class org.apache.flink.streaming.api.operators.python.AbstractPythonFunctionOperator

bundleFinishedCallback, config, elementCount, lastFinishBundleTime, maxBundleSize, systemEnvEnabled

Fields inherited from class org.apache.flink.streaming.api.operators.AbstractStreamOperator

combinedWatermark, lastRecordAttributes1, lastRecordAttributes2, latencyStats, LOG, metrics, output, processingTimeService, stateHandler, stateKeySelector1, stateKeySelector2, timeServiceManager

Constructor Summary

Constructors

Constructor	Description
ExternalPythonCoProcessOperator(org.apache.flink.configuration.Configuration config, DataStreamPythonFunctionInfo pythonFunctionInfo, org.apache.flink.api.common.typeinfo.TypeInformation<IN1> inputTypeInfo1, org.apache.flink.api.common.typeinfo.TypeInformation<IN2> inputTypeInfo2, org.apache.flink.api.common.typeinfo.TypeInformation<OUT> outputTypeInfo)

Method Summary

Modifier and Type	Method	Description
<T> AbstractExternalDataStreamPythonFunctionOperator<T>	copy(DataStreamPythonFunctionInfo pythonFunctionInfo, org.apache.flink.api.common.typeinfo.TypeInformation<T> outputTypeInfo)	Make a copy of the DataStreamPythonFunctionOperator with the given pythonFunctionInfo and outputTypeInfo.
PythonFunctionRunner	createPythonFunctionRunner()	Creates the PythonFunctionRunner which is responsible for Python user-defined function execution.
void	open()
void	processElement1(org.apache.flink.streaming.runtime.streamrecord.StreamRecord<IN1> element)
void	processElement2(org.apache.flink.streaming.runtime.streamrecord.StreamRecord<IN2> element)
void	processWatermark(org.apache.flink.streaming.api.watermark.Watermark mark)

Methods inherited from class org.apache.flink.streaming.api.operators.python.process.AbstractExternalTwoInputPythonFunctionOperator

createInputCoderInfoDescriptor, createOutputCoderInfoDescriptor, emitResult, endInput, getLeftInputType, getRightInputType, processElement

Methods inherited from class org.apache.flink.streaming.api.operators.python.process.AbstractExternalDataStreamPythonFunctionOperator

addSideOutputTags, createSideOutputCoderDescriptors, getInternalParameters, getOutputTagById, getProducedType, getPythonEnv, getPythonFunctionInfo, getSideOutputTags, getSideOutputTypeSerializerById, setNumPartitions

Methods inherited from class org.apache.flink.streaming.api.operators.python.process.AbstractExternalPythonFunctionOperator

close, createPythonEnvironmentManager, drainUnregisteredTimers, emitResults, invokeFinishBundle

Methods inherited from class org.apache.flink.streaming.api.operators.python.AbstractPythonFunctionOperator

checkInvokeFinishBundleByCount, finish, getConfiguration, getFlinkMetricContainer, isBundleFinished, prepareSnapshotPreBarrier, setCurrentKey

Methods inherited from class org.apache.flink.streaming.api.operators.AbstractStreamOperator

beforeInitializeStateHandler, getContainingTask, getCurrentKey, getExecutionConfig, getInternalTimerService, getKeyedStateBackend, getKeyedStateStore, getMetricGroup, getOperatorConfig, getOperatorID, getOperatorName, getOperatorStateBackend, getOrCreateKeyedState, getPartitionedState, getPartitionedState, getProcessingTimeService, getRuntimeContext, getStateKeySelector1, getStateKeySelector2, getTimeServiceManager, getUserCodeClassloader, hasKeyContext1, hasKeyContext2, initializeState, initializeState, isAsyncStateProcessingEnabled, isUsingCustomRawKeyedState, notifyCheckpointAborted, notifyCheckpointComplete, processLatencyMarker, processLatencyMarker1, processLatencyMarker2, processRecordAttributes, processRecordAttributes1, processRecordAttributes2, processWatermark, processWatermark1, processWatermark1, processWatermark2, processWatermark2, processWatermarkStatus, processWatermarkStatus, processWatermarkStatus1, processWatermarkStatus2, reportOrForwardLatencyMarker, setKeyContextElement1, setKeyContextElement2, setMailboxExecutor, setProcessingTimeService, setup, snapshotState, snapshotState, useSplittableTimers

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.flink.api.common.state.CheckpointListener

notifyCheckpointAborted, notifyCheckpointComplete

Methods inherited from interface org.apache.flink.streaming.api.operators.KeyContext

getCurrentKey, setCurrentKey

Methods inherited from interface org.apache.flink.streaming.api.operators.KeyContextHandler

hasKeyContext

Methods inherited from interface org.apache.flink.streaming.api.operators.StreamOperator

close, finish, getMetricGroup, getOperatorAttributes, getOperatorID, initializeState, prepareSnapshotPreBarrier, setKeyContextElement1, setKeyContextElement2, snapshotState

Methods inherited from interface org.apache.flink.streaming.api.operators.TwoInputStreamOperator

processLatencyMarker1, processLatencyMarker2, processRecordAttributes1, processRecordAttributes2, processWatermark1, processWatermark1, processWatermark2, processWatermark2, processWatermarkStatus1, processWatermarkStatus2

Constructor Details

ExternalPythonCoProcessOperator

public ExternalPythonCoProcessOperator(org.apache.flink.configuration.Configuration config,
 DataStreamPythonFunctionInfo pythonFunctionInfo,
 org.apache.flink.api.common.typeinfo.TypeInformation<IN1> inputTypeInfo1,
 org.apache.flink.api.common.typeinfo.TypeInformation<IN2> inputTypeInfo2,
 org.apache.flink.api.common.typeinfo.TypeInformation<OUT> outputTypeInfo)

Method Details

open

public void open()
          throws Exception

Specified by:

open in interface org.apache.flink.streaming.api.operators.StreamOperator<IN1>

Overrides:

open in class AbstractExternalTwoInputPythonFunctionOperator<IN1,IN2,OUT>

Throws:

Exception

createPythonFunctionRunner

public PythonFunctionRunner createPythonFunctionRunner()
                                                throws Exception

Description copied from class: AbstractExternalPythonFunctionOperator

Creates the PythonFunctionRunner which is responsible for Python user-defined function execution.

Specified by:

createPythonFunctionRunner in class AbstractExternalPythonFunctionOperator<OUT>

Throws:

Exception

processElement1

public void processElement1(org.apache.flink.streaming.runtime.streamrecord.StreamRecord<IN1> element)
                     throws Exception

Throws:

Exception

processElement2

public void processElement2(org.apache.flink.streaming.runtime.streamrecord.StreamRecord<IN2> element)
                     throws Exception

Throws:

Exception

processWatermark

public void processWatermark(org.apache.flink.streaming.api.watermark.Watermark mark)
                      throws Exception

Overrides:

processWatermark in class AbstractPythonFunctionOperator<OUT>

Throws:

Exception

copy

public <T>
AbstractExternalDataStreamPythonFunctionOperator<T> copy(DataStreamPythonFunctionInfo pythonFunctionInfo,
 org.apache.flink.api.common.typeinfo.TypeInformation<T> outputTypeInfo)

Description copied from interface: DataStreamPythonFunctionOperator

Make a copy of the DataStreamPythonFunctionOperator with the given pythonFunctionInfo and outputTypeInfo. This is used for chaining optimization which may need to update the underlying pythonFunctionInfo and outputTypeInfo with the other fields not changed.