src/main/java/org/apache/flink/benchmark/MultipleInputBenchmark.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one
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 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
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 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
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 * See the License for the specific language governing permissions and
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package org.apache.flink.benchmark;

import org.apache.flink.api.common.typeinfo.BasicTypeInfo;
import org.apache.flink.benchmark.functions.LongSource;
import org.apache.flink.benchmark.functions.QueuingLongSource;
import org.apache.flink.benchmark.operators.MultiplyByTwoOperatorFactory;
import org.apache.flink.streaming.api.datastream.DataStreamSource;
import org.apache.flink.streaming.api.datastream.MultipleConnectedStreams;
import org.apache.flink.streaming.api.environment.StreamExecutionEnvironment;
import org.apache.flink.streaming.api.functions.sink.DiscardingSink;
import org.apache.flink.streaming.api.transformations.MultipleInputTransformation;

import org.openjdk.jmh.annotations.Benchmark;
import org.openjdk.jmh.annotations.OperationsPerInvocation;
import org.openjdk.jmh.runner.Runner;
import org.openjdk.jmh.runner.RunnerException;
import org.openjdk.jmh.runner.options.Options;
import org.openjdk.jmh.runner.options.OptionsBuilder;
import org.openjdk.jmh.runner.options.VerboseMode;

public class MultipleInputBenchmark extends BenchmarkBase {

	public static final int RECORDS_PER_INVOCATION = TwoInputBenchmark.RECORDS_PER_INVOCATION;
	public static final int ONE_IDLE_RECORDS_PER_INVOCATION = TwoInputBenchmark.ONE_IDLE_RECORDS_PER_INVOCATION;
	public static final long CHECKPOINT_INTERVAL_MS = TwoInputBenchmark.CHECKPOINT_INTERVAL_MS;

	public static void main(String[] args)
		throws RunnerException {
		Options options = new OptionsBuilder()
			.verbosity(VerboseMode.NORMAL)
			.include(".*" + MultipleInputBenchmark.class.getSimpleName() + ".*")
			.build();

		new Runner(options).run();
	}

	@Benchmark
	@OperationsPerInvocation(RECORDS_PER_INVOCATION)
	public void multiInputMapSink(FlinkEnvironmentContext context) throws Exception {

		StreamExecutionEnvironment env = context.env;
		env.enableCheckpointing(CHECKPOINT_INTERVAL_MS);

		long numRecordsPerInput = RECORDS_PER_INVOCATION / 2;
		DataStreamSource<Long> source1 = env.addSource(new LongSource(numRecordsPerInput));
		DataStreamSource<Long> source2 = env.addSource(new LongSource(numRecordsPerInput));
		connectAndDiscard(env, source1, source2);

		env.execute();
	}

	@Benchmark
	@OperationsPerInvocation(ONE_IDLE_RECORDS_PER_INVOCATION)
	public void multiInputOneIdleMapSink(FlinkEnvironmentContext context) throws Exception {

		StreamExecutionEnvironment env = context.env;
		env.enableCheckpointing(CHECKPOINT_INTERVAL_MS);

		QueuingLongSource.reset();
		DataStreamSource<Long> source1 = env.addSource(new QueuingLongSource(1, ONE_IDLE_RECORDS_PER_INVOCATION - 1));
		DataStreamSource<Long> source2 = env.addSource(new QueuingLongSource(2, 1));
		connectAndDiscard(env, source1, source2);

		env.execute();
	}

	private static void connectAndDiscard(
			StreamExecutionEnvironment env,
			DataStreamSource<Long> source1,
			DataStreamSource<Long> source2) {
		MultipleInputTransformation<Long> transform = new MultipleInputTransformation<>(
				"custom operator",
				new MultiplyByTwoOperatorFactory(),
				BasicTypeInfo.LONG_TYPE_INFO,
				1);

		transform.addInput(source1.getTransformation());
		transform.addInput(source2.getTransformation());

		env.addOperator(transform);
		new MultipleConnectedStreams(env)
				.transform(transform)
				.addSink(new DiscardingSink<>());
	}
}