Java Code Examples for org.apache.flink.runtime.operators.util.TaskConfig#getIterationAggregators()

The following examples show how to use org.apache.flink.runtime.operators.util.TaskConfig#getIterationAggregators() . 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: IterationSynchronizationSinkTask.java From Flink-CEPplus with Apache License 2.0

4 votes

@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 2

Source File: IterationSynchronizationSinkTask.java From flink with Apache License 2.0

4 votes

@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 3

Source File: IterationSynchronizationSinkTask.java From flink with Apache License 2.0

4 votes

@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++;
		}
	}
}