org.apache.flink.runtime.operators

Class AbstractCachedBuildSideJoinDriver<IT1,IT2,OT>

java.lang.Object

org.apache.flink.runtime.operators.JoinDriver<IT1,IT2,OT>

org.apache.flink.runtime.operators.AbstractCachedBuildSideJoinDriver<IT1,IT2,OT>

All Implemented Interfaces:

Driver<FlatJoinFunction<IT1,IT2,OT>,OT>, ResettableDriver<FlatJoinFunction<IT1,IT2,OT>,OT>

Direct Known Subclasses:

BuildFirstCachedJoinDriver, BuildSecondCachedJoinDriver

public abstract class AbstractCachedBuildSideJoinDriver<IT1,IT2,OT>
extends JoinDriver<IT1,IT2,OT>
implements ResettableDriver<FlatJoinFunction<IT1,IT2,OT>,OT>

Field Summary

Fields inherited from class org.apache.flink.runtime.operators.JoinDriver

LOG, running, taskContext

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	AbstractCachedBuildSideJoinDriver(int buildSideIndex, int probeSideIndex)

Method Summary

Modifier and Type	Method and Description
void	cancel() This method is invoked when the driver must aborted in mid processing.
void	cleanup() This method is invoked in any case (clean termination and exception) at the end of the tasks operation.
void	initialize()
boolean	isInputResettable(int inputNum)
void	prepare() This method is called before the user code is opened.
void	reset()
void	run() The main operation method of the task.
void	teardown()

Methods inherited from class org.apache.flink.runtime.operators.JoinDriver

getNumberOfDriverComparators, getNumberOfInputs, getStubType, setup

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.runtime.operators.Driver

getNumberOfDriverComparators, getNumberOfInputs, getStubType, setup

Constructor Detail

AbstractCachedBuildSideJoinDriver

protected AbstractCachedBuildSideJoinDriver(int buildSideIndex,
                                            int probeSideIndex)

Method Detail

isInputResettable

public boolean isInputResettable(int inputNum)

Specified by:

isInputResettable in interface ResettableDriver<FlatJoinFunction<IT1,IT2,OT>,OT>

initialize

public void initialize()
                throws Exception

Specified by:

initialize in interface ResettableDriver<FlatJoinFunction<IT1,IT2,OT>,OT>

Throws:

Exception

prepare

public void prepare()
             throws Exception

Description copied from interface: Driver

This method is called before the user code is opened. An exception thrown by this method signals failure of the task.

Specified by:

prepare in interface Driver<FlatJoinFunction<IT1,IT2,OT>,OT>

Overrides:

prepare in class JoinDriver<IT1,IT2,OT>

Throws:

Exception - Exceptions may be forwarded and signal task failure.

run

public void run()
         throws Exception

Description copied from interface: Driver

The main operation method of the task. It should call the user code with the data subsets until the input is depleted.

Specified by:

run in interface Driver<FlatJoinFunction<IT1,IT2,OT>,OT>

Overrides:

run in class JoinDriver<IT1,IT2,OT>

Throws:

Exception - Any exception thrown by this method signals task failure. Because exceptions in the user code typically signal situations where this instance in unable to proceed, exceptions from the user code should be forwarded.

cleanup

public void cleanup()
             throws Exception

Description copied from interface: Driver

This method is invoked in any case (clean termination and exception) at the end of the tasks operation.

Specified by:

cleanup in interface Driver<FlatJoinFunction<IT1,IT2,OT>,OT>

Overrides:

cleanup in class JoinDriver<IT1,IT2,OT>

Throws:

Exception - Exceptions may be forwarded.

reset

public void reset()
           throws Exception

Specified by:

reset in interface ResettableDriver<FlatJoinFunction<IT1,IT2,OT>,OT>

Throws:

Exception

teardown

public void teardown()

Specified by:

teardown in interface ResettableDriver<FlatJoinFunction<IT1,IT2,OT>,OT>

cancel

public void cancel()

Description copied from interface: Driver

This method is invoked when the driver must aborted in mid processing. It is invoked asynchronously by a different thread.

Specified by:

cancel in interface Driver<FlatJoinFunction<IT1,IT2,OT>,OT>

Overrides:

cancel in class JoinDriver<IT1,IT2,OT>