org.apache.flink.runtime.iterative.event.TerminationEvent Java Examples

The following examples show how to use org.apache.flink.runtime.iterative.event.TerminationEvent. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example #1
Source File: SuperstepBarrierTest.java    From flink with Apache License 2.0 6 votes vote down vote up 
private void sync(TaskEvent event) throws InterruptedException {

		TerminationSignaled terminationSignaled = new TerminationSignaled();

		SuperstepBarrier barrier = new SuperstepBarrier(getClass().getClassLoader());
		barrier.setup();

		Thread headThread = new Thread(new IterationHead(barrier, terminationSignaled));
		Thread syncThread = new Thread(new IterationSync(barrier, event));

		headThread.start();
		syncThread.start();

		headThread.join();
		syncThread.join();

		if (event instanceof TerminationEvent) {
			assertTrue(terminationSignaled.isTerminationSignaled());
		} else {
			assertFalse(terminationSignaled.isTerminationSignaled());
		}
	}
Example #2
Source File: SuperstepBarrierTest.java    From Flink-CEPplus with Apache License 2.0 6 votes vote down vote up 
private void sync(TaskEvent event) throws InterruptedException {

		TerminationSignaled terminationSignaled = new TerminationSignaled();

		SuperstepBarrier barrier = new SuperstepBarrier(getClass().getClassLoader());
		barrier.setup();

		Thread headThread = new Thread(new IterationHead(barrier, terminationSignaled));
		Thread syncThread = new Thread(new IterationSync(barrier, event));

		headThread.start();
		syncThread.start();

		headThread.join();
		syncThread.join();

		if (event instanceof TerminationEvent) {
			assertTrue(terminationSignaled.isTerminationSignaled());
		} else {
			assertFalse(terminationSignaled.isTerminationSignaled());
		}
	}
Example #3
Source File: SuperstepBarrier.java    From flink with Apache License 2.0 6 votes vote down vote up 
/** Barrier will release the waiting thread if an event occurs. */
@Override
public void onEvent(TaskEvent event) {
	if (event instanceof TerminationEvent) {
		terminationSignaled = true;
	}
	else if (event instanceof AllWorkersDoneEvent) {
		AllWorkersDoneEvent wde = (AllWorkersDoneEvent) event;
		aggregatorNames = wde.getAggregatorNames();
		aggregates = wde.getAggregates(userCodeClassLoader);
	}
	else {
		throw new IllegalArgumentException("Unknown event type.");
	}

	latch.countDown();
}
Example #4
Source File: SuperstepBarrier.java    From Flink-CEPplus with Apache License 2.0 6 votes vote down vote up 
/** Barrier will release the waiting thread if an event occurs. */
@Override
public void onEvent(TaskEvent event) {
	if (event instanceof TerminationEvent) {
		terminationSignaled = true;
	}
	else if (event instanceof AllWorkersDoneEvent) {
		AllWorkersDoneEvent wde = (AllWorkersDoneEvent) event;
		aggregatorNames = wde.getAggregatorNames();
		aggregates = wde.getAggregates(userCodeClassLoader);
	}
	else {
		throw new IllegalArgumentException("Unknown event type.");
	}

	latch.countDown();
}
Example #5
Source File: SuperstepBarrierTest.java    From flink with Apache License 2.0 6 votes vote down vote up 
private void sync(TaskEvent event) throws InterruptedException {

		TerminationSignaled terminationSignaled = new TerminationSignaled();

		SuperstepBarrier barrier = new SuperstepBarrier(getClass().getClassLoader());
		barrier.setup();

		Thread headThread = new Thread(new IterationHead(barrier, terminationSignaled));
		Thread syncThread = new Thread(new IterationSync(barrier, event));

		headThread.start();
		syncThread.start();

		headThread.join();
		syncThread.join();

		if (event instanceof TerminationEvent) {
			assertTrue(terminationSignaled.isTerminationSignaled());
		} else {
			assertFalse(terminationSignaled.isTerminationSignaled());
		}
	}
Example #6
Source File: SuperstepBarrier.java    From flink with Apache License 2.0 6 votes vote down vote up 
/** Barrier will release the waiting thread if an event occurs. */
@Override
public void onEvent(TaskEvent event) {
	if (event instanceof TerminationEvent) {
		terminationSignaled = true;
	}
	else if (event instanceof AllWorkersDoneEvent) {
		AllWorkersDoneEvent wde = (AllWorkersDoneEvent) event;
		aggregatorNames = wde.getAggregatorNames();
		aggregates = wde.getAggregates(userCodeClassLoader);
	}
	else {
		throw new IllegalArgumentException("Unknown event type.");
	}

	latch.countDown();
}
Example #7
Source File: TaskEventDispatcherTest.java    From flink with Apache License 2.0 5 votes vote down vote up 
/**
 * Tests {@link TaskEventDispatcher#publish(ResultPartitionID, TaskEvent)} and {@link TaskEventDispatcher#subscribeToEvent(ResultPartitionID, EventListener, Class)} methods.
 */
@Test
public void publishSubscribe() throws Exception {
	ResultPartitionID partitionId1 = new ResultPartitionID();
	ResultPartitionID partitionId2 = new ResultPartitionID();
	TaskEventDispatcher ted = new TaskEventDispatcher();

	AllWorkersDoneEvent event1 = new AllWorkersDoneEvent();
	TerminationEvent event2 = new TerminationEvent();
	assertFalse(ted.publish(partitionId1, event1));

	ted.registerPartition(partitionId1);
	ted.registerPartition(partitionId2);

	// no event listener subscribed yet, but the event is forwarded to a TaskEventHandler
	assertTrue(ted.publish(partitionId1, event1));

	OneShotEventListener eventListener1a = new OneShotEventListener(event1);
	ZeroShotEventListener eventListener1b = new ZeroShotEventListener();
	ZeroShotEventListener eventListener2 = new ZeroShotEventListener();
	OneShotEventListener eventListener3 = new OneShotEventListener(event2);
	ted.subscribeToEvent(partitionId1, eventListener1a, AllWorkersDoneEvent.class);
	ted.subscribeToEvent(partitionId2, eventListener1b, AllWorkersDoneEvent.class);
	ted.subscribeToEvent(partitionId1, eventListener2, TaskEvent.class);
	ted.subscribeToEvent(partitionId1, eventListener3, TerminationEvent.class);

	assertTrue(ted.publish(partitionId1, event1));
	assertTrue("listener should have fired for AllWorkersDoneEvent", eventListener1a.fired);
	assertFalse("listener should not have fired for AllWorkersDoneEvent", eventListener3.fired);

	// publish another event, verify that only the right subscriber is called
	assertTrue(ted.publish(partitionId1, event2));
	assertTrue("listener should have fired for TerminationEvent", eventListener3.fired);
}
Example #8
Source File: IterationHeadTask.java    From Flink-CEPplus with Apache License 2.0 5 votes vote down vote up 
private SuperstepBarrier initSuperstepBarrier() {
	SuperstepBarrier barrier = new SuperstepBarrier(getUserCodeClassLoader());
	TaskEventDispatcher taskEventDispatcher = getEnvironment().getTaskEventDispatcher();
	ResultPartitionID partitionId = toSyncPartitionId;
	taskEventDispatcher.subscribeToEvent(partitionId, barrier, AllWorkersDoneEvent.class);
	taskEventDispatcher.subscribeToEvent(partitionId, barrier, TerminationEvent.class);
	return barrier;
}
Example #9
Source File: TaskEventDispatcherTest.java    From Flink-CEPplus with Apache License 2.0 5 votes vote down vote up 
/**
 * Tests {@link TaskEventDispatcher#publish(ResultPartitionID, TaskEvent)} and {@link TaskEventDispatcher#subscribeToEvent(ResultPartitionID, EventListener, Class)} methods.
 */
@Test
public void publishSubscribe() throws Exception {
	ResultPartitionID partitionId1 = new ResultPartitionID();
	ResultPartitionID partitionId2 = new ResultPartitionID();
	TaskEventDispatcher ted = new TaskEventDispatcher();

	AllWorkersDoneEvent event1 = new AllWorkersDoneEvent();
	TerminationEvent event2 = new TerminationEvent();
	assertFalse(ted.publish(partitionId1, event1));

	ted.registerPartition(partitionId1);
	ted.registerPartition(partitionId2);

	// no event listener subscribed yet, but the event is forwarded to a TaskEventHandler
	assertTrue(ted.publish(partitionId1, event1));

	OneShotEventListener eventListener1a = new OneShotEventListener(event1);
	ZeroShotEventListener eventListener1b = new ZeroShotEventListener();
	ZeroShotEventListener eventListener2 = new ZeroShotEventListener();
	OneShotEventListener eventListener3 = new OneShotEventListener(event2);
	ted.subscribeToEvent(partitionId1, eventListener1a, AllWorkersDoneEvent.class);
	ted.subscribeToEvent(partitionId2, eventListener1b, AllWorkersDoneEvent.class);
	ted.subscribeToEvent(partitionId1, eventListener2, TaskEvent.class);
	ted.subscribeToEvent(partitionId1, eventListener3, TerminationEvent.class);

	assertTrue(ted.publish(partitionId1, event1));
	assertTrue("listener should have fired for AllWorkersDoneEvent", eventListener1a.fired);
	assertFalse("listener should not have fired for AllWorkersDoneEvent", eventListener3.fired);

	// publish another event, verify that only the right subscriber is called
	assertTrue(ted.publish(partitionId1, event2));
	assertTrue("listener should have fired for TerminationEvent", eventListener3.fired);
}
Example #10
Source File: IterationHeadTask.java    From flink with Apache License 2.0 5 votes vote down vote up 
private SuperstepBarrier initSuperstepBarrier() {
	SuperstepBarrier barrier = new SuperstepBarrier(getUserCodeClassLoader());
	TaskEventDispatcher taskEventDispatcher = getEnvironment().getTaskEventDispatcher();
	ResultPartitionID partitionId = toSyncPartitionId;
	taskEventDispatcher.subscribeToEvent(partitionId, barrier, AllWorkersDoneEvent.class);
	taskEventDispatcher.subscribeToEvent(partitionId, barrier, TerminationEvent.class);
	return barrier;
}
Example #11
Source File: TaskEventDispatcherTest.java    From flink with Apache License 2.0 5 votes vote down vote up 
/**
 * Tests {@link TaskEventDispatcher#publish(ResultPartitionID, TaskEvent)} and {@link TaskEventDispatcher#subscribeToEvent(ResultPartitionID, EventListener, Class)} methods.
 */
@Test
public void publishSubscribe() throws Exception {
	ResultPartitionID partitionId1 = new ResultPartitionID();
	ResultPartitionID partitionId2 = new ResultPartitionID();
	TaskEventDispatcher ted = new TaskEventDispatcher();

	AllWorkersDoneEvent event1 = new AllWorkersDoneEvent();
	TerminationEvent event2 = new TerminationEvent();
	assertFalse(ted.publish(partitionId1, event1));

	ted.registerPartition(partitionId1);
	ted.registerPartition(partitionId2);

	// no event listener subscribed yet, but the event is forwarded to a TaskEventHandler
	assertTrue(ted.publish(partitionId1, event1));

	OneShotEventListener eventListener1a = new OneShotEventListener(event1);
	ZeroShotEventListener eventListener1b = new ZeroShotEventListener();
	ZeroShotEventListener eventListener2 = new ZeroShotEventListener();
	OneShotEventListener eventListener3 = new OneShotEventListener(event2);
	ted.subscribeToEvent(partitionId1, eventListener1a, AllWorkersDoneEvent.class);
	ted.subscribeToEvent(partitionId2, eventListener1b, AllWorkersDoneEvent.class);
	ted.subscribeToEvent(partitionId1, eventListener2, TaskEvent.class);
	ted.subscribeToEvent(partitionId1, eventListener3, TerminationEvent.class);

	assertTrue(ted.publish(partitionId1, event1));
	assertTrue("listener should have fired for AllWorkersDoneEvent", eventListener1a.fired);
	assertFalse("listener should not have fired for AllWorkersDoneEvent", eventListener3.fired);

	// publish another event, verify that only the right subscriber is called
	assertTrue(ted.publish(partitionId1, event2));
	assertTrue("listener should have fired for TerminationEvent", eventListener3.fired);
}
Example #12
Source File: IterationHeadTask.java    From flink with Apache License 2.0 5 votes vote down vote up 
private SuperstepBarrier initSuperstepBarrier() {
	SuperstepBarrier barrier = new SuperstepBarrier(getUserCodeClassLoader());
	TaskEventDispatcher taskEventDispatcher = getEnvironment().getTaskEventDispatcher();
	ResultPartitionID partitionId = toSyncPartitionId;
	taskEventDispatcher.subscribeToEvent(partitionId, barrier, AllWorkersDoneEvent.class);
	taskEventDispatcher.subscribeToEvent(partitionId, barrier, TerminationEvent.class);
	return barrier;
}
Example #13
Source File: SuperstepBarrierTest.java    From flink with Apache License 2.0 4 votes vote down vote up 
@Test
public void syncTermination() throws InterruptedException {
	for (int n = 0; n < 20; n++) {
		sync(new TerminationEvent());
	}
}
Example #14
Source File: SuperstepBarrierTest.java    From flink with Apache License 2.0 4 votes vote down vote up 
@Test
public void syncTermination() throws InterruptedException {
	for (int n = 0; n < 20; n++) {
		sync(new TerminationEvent());
	}
}
Example #15
Source File: IterationSynchronizationSinkTask.java    From flink with Apache License 2.0 4 votes vote down vote up 
@Override
public void invoke() throws Exception {
	this.headEventReader = new MutableRecordReader<>(
			getEnvironment().getInputGate(0),
			getEnvironment().getTaskManagerInfo().getTmpDirectories());

	TaskConfig taskConfig = new TaskConfig(getTaskConfiguration());

	// store all aggregators
	this.aggregators = new HashMap<>();
	for (AggregatorWithName<?> aggWithName : taskConfig.getIterationAggregators(getUserCodeClassLoader())) {
		aggregators.put(aggWithName.getName(), aggWithName.getAggregator());
	}

	// store the aggregator convergence criterion
	if (taskConfig.usesConvergenceCriterion()) {
		convergenceCriterion = taskConfig.getConvergenceCriterion(getUserCodeClassLoader());
		convergenceAggregatorName = taskConfig.getConvergenceCriterionAggregatorName();
		Preconditions.checkNotNull(convergenceAggregatorName);
	}

	// store the default aggregator convergence criterion
	if (taskConfig.usesImplicitConvergenceCriterion()) {
		implicitConvergenceCriterion = taskConfig.getImplicitConvergenceCriterion(getUserCodeClassLoader());
		implicitConvergenceAggregatorName = taskConfig.getImplicitConvergenceCriterionAggregatorName();
		Preconditions.checkNotNull(implicitConvergenceAggregatorName);
	}

	maxNumberOfIterations = taskConfig.getNumberOfIterations();

	// set up the event handler
	int numEventsTillEndOfSuperstep = taskConfig.getNumberOfEventsUntilInterruptInIterativeGate(0);
	eventHandler = new SyncEventHandler(numEventsTillEndOfSuperstep, aggregators,
			getEnvironment().getUserClassLoader());
	headEventReader.registerTaskEventListener(eventHandler, WorkerDoneEvent.class);

	IntValue dummy = new IntValue();

	while (!terminationRequested()) {

		if (log.isInfoEnabled()) {
			log.info(formatLogString("starting iteration [" + currentIteration + "]"));
		}

		// this call listens for events until the end-of-superstep is reached
		readHeadEventChannel(dummy);

		if (log.isInfoEnabled()) {
			log.info(formatLogString("finishing iteration [" + currentIteration + "]"));
		}

		if (checkForConvergence()) {
			if (log.isInfoEnabled()) {
				log.info(formatLogString("signaling that all workers are to terminate in iteration ["
					+ currentIteration + "]"));
			}

			requestTermination();
			sendToAllWorkers(new TerminationEvent());
		} else {
			if (log.isInfoEnabled()) {
				log.info(formatLogString("signaling that all workers are done in iteration [" + currentIteration
					+ "]"));
			}

			AllWorkersDoneEvent allWorkersDoneEvent = new AllWorkersDoneEvent(aggregators);
			sendToAllWorkers(allWorkersDoneEvent);

			// reset all aggregators
			for (Aggregator<?> agg : aggregators.values()) {
				agg.reset();
			}
			currentIteration++;
		}
	}
}
Example #16
Source File: IterationSynchronizationSinkTask.java    From flink with Apache License 2.0 4 votes vote down vote up 
@Override
public void invoke() throws Exception {
	this.headEventReader = new MutableRecordReader<>(
			getEnvironment().getInputGate(0),
			getEnvironment().getTaskManagerInfo().getTmpDirectories());

	TaskConfig taskConfig = new TaskConfig(getTaskConfiguration());

	// store all aggregators
	this.aggregators = new HashMap<>();
	for (AggregatorWithName<?> aggWithName : taskConfig.getIterationAggregators(getUserCodeClassLoader())) {
		aggregators.put(aggWithName.getName(), aggWithName.getAggregator());
	}

	// store the aggregator convergence criterion
	if (taskConfig.usesConvergenceCriterion()) {
		convergenceCriterion = taskConfig.getConvergenceCriterion(getUserCodeClassLoader());
		convergenceAggregatorName = taskConfig.getConvergenceCriterionAggregatorName();
		Preconditions.checkNotNull(convergenceAggregatorName);
	}

	// store the default aggregator convergence criterion
	if (taskConfig.usesImplicitConvergenceCriterion()) {
		implicitConvergenceCriterion = taskConfig.getImplicitConvergenceCriterion(getUserCodeClassLoader());
		implicitConvergenceAggregatorName = taskConfig.getImplicitConvergenceCriterionAggregatorName();
		Preconditions.checkNotNull(implicitConvergenceAggregatorName);
	}

	maxNumberOfIterations = taskConfig.getNumberOfIterations();

	// set up the event handler
	int numEventsTillEndOfSuperstep = taskConfig.getNumberOfEventsUntilInterruptInIterativeGate(0);
	eventHandler = new SyncEventHandler(numEventsTillEndOfSuperstep, aggregators,
			getEnvironment().getUserClassLoader());
	headEventReader.registerTaskEventListener(eventHandler, WorkerDoneEvent.class);

	IntValue dummy = new IntValue();

	while (!terminationRequested()) {

		if (log.isInfoEnabled()) {
			log.info(formatLogString("starting iteration [" + currentIteration + "]"));
		}

		// this call listens for events until the end-of-superstep is reached
		readHeadEventChannel(dummy);

		if (log.isInfoEnabled()) {
			log.info(formatLogString("finishing iteration [" + currentIteration + "]"));
		}

		if (checkForConvergence()) {
			if (log.isInfoEnabled()) {
				log.info(formatLogString("signaling that all workers are to terminate in iteration ["
					+ currentIteration + "]"));
			}

			requestTermination();
			sendToAllWorkers(new TerminationEvent());
		} else {
			if (log.isInfoEnabled()) {
				log.info(formatLogString("signaling that all workers are done in iteration [" + currentIteration
					+ "]"));
			}

			AllWorkersDoneEvent allWorkersDoneEvent = new AllWorkersDoneEvent(aggregators);
			sendToAllWorkers(allWorkersDoneEvent);

			// reset all aggregators
			for (Aggregator<?> agg : aggregators.values()) {
				agg.reset();
			}
			currentIteration++;
		}
	}
}
Example #17
Source File: SuperstepBarrierTest.java    From Flink-CEPplus with Apache License 2.0 4 votes vote down vote up 
@Test
public void syncTermination() throws InterruptedException {
	for (int n = 0; n < 20; n++) {
		sync(new TerminationEvent());
	}
}
Example #18
Source File: IterationSynchronizationSinkTask.java    From Flink-CEPplus with Apache License 2.0 4 votes vote down vote up 
@Override
public void invoke() throws Exception {
	this.headEventReader = new MutableRecordReader<>(
			getEnvironment().getInputGate(0),
			getEnvironment().getTaskManagerInfo().getTmpDirectories());

	TaskConfig taskConfig = new TaskConfig(getTaskConfiguration());

	// store all aggregators
	this.aggregators = new HashMap<>();
	for (AggregatorWithName<?> aggWithName : taskConfig.getIterationAggregators(getUserCodeClassLoader())) {
		aggregators.put(aggWithName.getName(), aggWithName.getAggregator());
	}

	// store the aggregator convergence criterion
	if (taskConfig.usesConvergenceCriterion()) {
		convergenceCriterion = taskConfig.getConvergenceCriterion(getUserCodeClassLoader());
		convergenceAggregatorName = taskConfig.getConvergenceCriterionAggregatorName();
		Preconditions.checkNotNull(convergenceAggregatorName);
	}

	// store the default aggregator convergence criterion
	if (taskConfig.usesImplicitConvergenceCriterion()) {
		implicitConvergenceCriterion = taskConfig.getImplicitConvergenceCriterion(getUserCodeClassLoader());
		implicitConvergenceAggregatorName = taskConfig.getImplicitConvergenceCriterionAggregatorName();
		Preconditions.checkNotNull(implicitConvergenceAggregatorName);
	}

	maxNumberOfIterations = taskConfig.getNumberOfIterations();

	// set up the event handler
	int numEventsTillEndOfSuperstep = taskConfig.getNumberOfEventsUntilInterruptInIterativeGate(0);
	eventHandler = new SyncEventHandler(numEventsTillEndOfSuperstep, aggregators,
			getEnvironment().getUserClassLoader());
	headEventReader.registerTaskEventListener(eventHandler, WorkerDoneEvent.class);

	IntValue dummy = new IntValue();

	while (!terminationRequested()) {

		if (log.isInfoEnabled()) {
			log.info(formatLogString("starting iteration [" + currentIteration + "]"));
		}

		// this call listens for events until the end-of-superstep is reached
		readHeadEventChannel(dummy);

		if (log.isInfoEnabled()) {
			log.info(formatLogString("finishing iteration [" + currentIteration + "]"));
		}

		if (checkForConvergence()) {
			if (log.isInfoEnabled()) {
				log.info(formatLogString("signaling that all workers are to terminate in iteration ["
					+ currentIteration + "]"));
			}

			requestTermination();
			sendToAllWorkers(new TerminationEvent());
		} else {
			if (log.isInfoEnabled()) {
				log.info(formatLogString("signaling that all workers are done in iteration [" + currentIteration
					+ "]"));
			}

			AllWorkersDoneEvent allWorkersDoneEvent = new AllWorkersDoneEvent(aggregators);
			sendToAllWorkers(allWorkersDoneEvent);

			// reset all aggregators
			for (Aggregator<?> agg : aggregators.values()) {
				agg.reset();
			}
			currentIteration++;
		}
	}
}