org.apache.flink.runtime.operators

Class AbstractCachedBuildSideMatchDriver<IT1,IT2,OT>

java.lang.Object

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

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

All Implemented Interfaces:

PactDriver<FlatJoinFunction<IT1,IT2,OT>,OT>, ResettablePactDriver<FlatJoinFunction<IT1,IT2,OT>,OT>

Direct Known Subclasses:

BuildFirstCachedMatchDriver, BuildSecondCachedMatchDriver

public abstract class AbstractCachedBuildSideMatchDriver<IT1,IT2,OT>
extends MatchDriver<IT1,IT2,OT>
implements ResettablePactDriver<FlatJoinFunction<IT1,IT2,OT>,OT>

Field Summary

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

LOG, running, taskContext

Constructor Summary

Constructors

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

Method Summary

Methods

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.MatchDriver

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.PactDriver

getNumberOfDriverComparators, getNumberOfInputs, getStubType, setup

Constructor Detail

AbstractCachedBuildSideMatchDriver

protected AbstractCachedBuildSideMatchDriver(int buildSideIndex,
                                  int probeSideIndex)

Method Detail

isInputResettable

public boolean isInputResettable(int inputNum)

Specified by:

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

initialize

public void initialize()
                throws Exception

Specified by:

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

Throws:

Exception

prepare

public void prepare()
             throws Exception

Description copied from interface: PactDriver

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 PactDriver<FlatJoinFunction<IT1,IT2,OT>,OT>

Overrides:

prepare in class MatchDriver<IT1,IT2,OT>

Throws:

Exception - Exceptions may be forwarded and signal task failure.

run

public void run()
         throws Exception

Description copied from interface: PactDriver

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 PactDriver<FlatJoinFunction<IT1,IT2,OT>,OT>

Overrides:

run in class MatchDriver<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: PactDriver

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

Specified by:

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

Overrides:

cleanup in class MatchDriver<IT1,IT2,OT>

Throws:

Exception - Exceptions may be forwarded.

reset

public void reset()
           throws Exception

Specified by:

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

Throws:

Exception

teardown

public void teardown()

Specified by:

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

cancel

public void cancel()

Description copied from interface: PactDriver

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 PactDriver<FlatJoinFunction<IT1,IT2,OT>,OT>

Overrides:

cancel in class MatchDriver<IT1,IT2,OT>