org.apache.flink.runtime.operators.chaining

Class ChainedDriver<IT,OT>

java.lang.Object

org.apache.flink.runtime.operators.chaining.ChainedDriver<IT,OT>

All Implemented Interfaces:

Collector<IT>

Direct Known Subclasses:

ChainedAllReduceDriver, ChainedFlatMapDriver, ChainedMapDriver, ChainedReduceCombineDriver, ChainedTerminationCriterionDriver, GroupCombineChainedDriver, NoOpChainedDriver, SynchronousChainedCombineDriver

public abstract class ChainedDriver<IT,OT>
extends Object
implements Collector<IT>

The interface to be implemented by drivers that do not run in an own task context, but are chained to other tasks.

Field Summary

Fields

Modifier and Type	Field and Description
protected TaskConfig	config
protected ExecutionConfig	executionConfig
protected OperatorMetricGroup	metrics
protected Counter	numRecordsIn
protected Counter	numRecordsOut
protected boolean	objectReuseEnabled
protected Collector<OT>	outputCollector
protected String	taskName
protected ClassLoader	userCodeClassLoader

Constructor Summary

Constructors

Constructor and Description
ChainedDriver()

Method Summary

Modifier and Type	Method and Description
abstract void	cancelTask()
abstract void	closeTask()
abstract void	collect(IT record) Emits a record.
OperatorIOMetricGroup	getIOMetrics()
Collector<OT>	getOutputCollector()
abstract Function	getStub()
TaskConfig	getTaskConfig()
abstract String	getTaskName()
protected RuntimeContext	getUdfRuntimeContext()
abstract void	openTask()
void	setOutputCollector(Collector<?> outputCollector)
abstract void	setup(AbstractInvokable parent)
void	setup(TaskConfig config, String taskName, Collector<OT> outputCollector, AbstractInvokable parent, ClassLoader userCodeClassLoader, ExecutionConfig executionConfig, Map<String,Accumulator<?,?>> accumulatorMap)

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.util.Collector

close

Field Detail

config

protected TaskConfig config

taskName

protected String taskName

outputCollector

protected Collector<OT> outputCollector

userCodeClassLoader

protected ClassLoader userCodeClassLoader

executionConfig

protected ExecutionConfig executionConfig

objectReuseEnabled

protected boolean objectReuseEnabled

metrics

protected OperatorMetricGroup metrics

numRecordsIn

protected Counter numRecordsIn

numRecordsOut

protected Counter numRecordsOut

Constructor Detail

ChainedDriver

public ChainedDriver()

Method Detail

setup

public void setup(TaskConfig config,
                  String taskName,
                  Collector<OT> outputCollector,
                  AbstractInvokable parent,
                  ClassLoader userCodeClassLoader,
                  ExecutionConfig executionConfig,
                  Map<String,Accumulator<?,?>> accumulatorMap)

setup

public abstract void setup(AbstractInvokable parent)

openTask

public abstract void openTask()
                       throws Exception

Throws:

Exception

closeTask

public abstract void closeTask()
                        throws Exception

Throws:

Exception

cancelTask

public abstract void cancelTask()

getStub

public abstract Function getStub()

getTaskName

public abstract String getTaskName()

collect

public abstract void collect(IT record)

Description copied from interface: Collector

Emits a record.

Specified by:

collect in interface Collector<IT>

Parameters:

record - The record to collect.

getIOMetrics

public OperatorIOMetricGroup getIOMetrics()

getUdfRuntimeContext

protected RuntimeContext getUdfRuntimeContext()

setOutputCollector

public void setOutputCollector(Collector<?> outputCollector)

getOutputCollector

public Collector<OT> getOutputCollector()

getTaskConfig

public TaskConfig getTaskConfig()