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

Class ExternalPythonProcessOperator<IN,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.AbstractExternalOneInputPythonFunctionOperator<IN,OUT>

org.apache.flink.streaming.api.operators.python.process.ExternalPythonProcessOperator<IN,OUT>

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.BoundedOneInput, org.apache.flink.streaming.api.operators.Input<IN>, org.apache.flink.streaming.api.operators.KeyContext, org.apache.flink.streaming.api.operators.KeyContextHandler, org.apache.flink.streaming.api.operators.OneInputStreamOperator<IN,OUT>, DataStreamPythonFunctionOperator<OUT>, org.apache.flink.streaming.api.operators.SetupableStreamOperator<OUT>, org.apache.flink.streaming.api.operators.StreamOperator<OUT>, org.apache.flink.streaming.api.operators.StreamOperatorStateHandler.CheckpointedStreamOperator

@Internal
public class ExternalPythonProcessOperator<IN,OUT>
extends AbstractExternalOneInputPythonFunctionOperator<IN,OUT>

ExternalPythonProcessOperator is responsible for launching beam runner which will start a python harness to execute user defined python ProcessFunction.

See Also:

Serialized Form

Field Summary

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

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

chainingStrategy, lastRecordAttributes1, lastRecordAttributes2, latencyStats, LOG, metrics, output, processingTimeService

Constructor Summary

Constructors

Constructor	Description
ExternalPythonProcessOperator(org.apache.flink.configuration.Configuration config, DataStreamPythonFunctionInfo pythonFunctionInfo, org.apache.flink.api.common.typeinfo.TypeInformation<IN> inputTypeInfo, 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	processElement(org.apache.flink.streaming.runtime.streamrecord.StreamRecord<IN> element)
void	processWatermark(org.apache.flink.streaming.api.watermark.Watermark mark)

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

createInputCoderInfoDescriptor, createOutputCoderInfoDescriptor, emitResult, endInput, getInputTypeInfo, 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, 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

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

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.Input

processLatencyMarker, processRecordAttributes, processWatermarkStatus

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.OneInputStreamOperator

setKeyContextElement

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

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

Constructor Detail

ExternalPythonProcessOperator

public ExternalPythonProcessOperator(org.apache.flink.configuration.Configuration config,
                                     DataStreamPythonFunctionInfo pythonFunctionInfo,
                                     org.apache.flink.api.common.typeinfo.TypeInformation<IN> inputTypeInfo,
                                     org.apache.flink.api.common.typeinfo.TypeInformation<OUT> outputTypeInfo)

Method Detail

open

public void open()
          throws Exception

Specified by:

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

Overrides:

open in class AbstractExternalOneInputPythonFunctionOperator<IN,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

processElement

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

Throws:

Exception

processWatermark

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

Specified by:

processWatermark in interface org.apache.flink.streaming.api.operators.Input<IN>

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.