examples/beam/src/test/java/org/apache/nemo/examples/beam/WindowedWordCountITCase.java

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 * distributed with this work for additional information
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 * 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,
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package org.apache.nemo.examples.beam;

import org.apache.nemo.client.JobLauncher;
import org.apache.nemo.common.test.ArgBuilder;
import org.apache.nemo.common.test.ExampleTestArgs;
import org.apache.nemo.common.test.ExampleTestUtil;
import org.apache.nemo.compiler.optimizer.policy.DefaultPolicy;
import org.apache.nemo.examples.beam.policy.DefaultPolicyParallelismFive;
import org.apache.nemo.examples.beam.policy.StreamingPolicyParallelismFive;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.powermock.core.classloader.annotations.PrepareForTest;
import org.powermock.modules.junit4.PowerMockRunner;

import static org.apache.nemo.examples.beam.WindowedWordCount.INPUT_TYPE_BOUNDED;
import static org.apache.nemo.examples.beam.WindowedWordCount.INPUT_TYPE_UNBOUNDED;

/**
 * Test Windowed word count program with JobLauncher.
 * TODO #299: WindowedWordCountITCase Hangs (Heisenbug)
 */
@RunWith(PowerMockRunner.class)
@PrepareForTest(JobLauncher.class)
public final class WindowedWordCountITCase {
  private static ArgBuilder builder;

  private static final String inputFileName = "inputs/test_input_windowed_wordcount";
  private static final String outputFileName = "test_output_windowed_wordcount";
  private static final String expectedOutputFileName = "outputs/expected_output_windowed_wordcount";
  private static final String expectedSlidingWindowOutputFileName = "outputs/expected_output_sliding_windowed_wordcount";
  private static final String executorResourceFileName = ExampleTestArgs.getFileBasePath() + "executors/beam_test_executor_resources.json";
  private static final String inputFilePath = ExampleTestArgs.getFileBasePath() + inputFileName;
  private static final String outputFilePath = ExampleTestArgs.getFileBasePath() + outputFileName;

  @Test(timeout = ExampleTestArgs.TIMEOUT)
  public void testBatchFixedWindow() throws Exception {
    builder = new ArgBuilder()
      .addUserMain(WindowedWordCount.class.getCanonicalName())
      .addUserArgs(outputFilePath, "fixed", INPUT_TYPE_BOUNDED, inputFilePath);

    JobLauncher.main(builder
      .addResourceJson(executorResourceFileName)
      .addJobId(WindowedWordCountITCase.class.getSimpleName() + "testBatchFixedWindow")
      .addOptimizationPolicy(DefaultPolicyParallelismFive.class.getCanonicalName())
      .build());

    try {
      ExampleTestUtil.ensureOutputValidity(ExampleTestArgs.getFileBasePath(), outputFileName, expectedOutputFileName);
    } finally {
      ExampleTestUtil.deleteOutputFile(ExampleTestArgs.getFileBasePath(), outputFileName);
    }
  }


  @Test(timeout = ExampleTestArgs.TIMEOUT)
  public void testBatchSlidingWindow() throws Exception {
    builder = new ArgBuilder()
      .addUserMain(WindowedWordCount.class.getCanonicalName())
      .addUserArgs(outputFilePath, "sliding", INPUT_TYPE_BOUNDED, inputFilePath);

    JobLauncher.main(builder
      .addResourceJson(executorResourceFileName)
      .addJobId(WindowedWordCountITCase.class.getSimpleName() + "testBatchSlidingWindow")
      .addOptimizationPolicy(DefaultPolicy.class.getCanonicalName())
      .build());

    try {
      ExampleTestUtil.ensureOutputValidity(ExampleTestArgs.getFileBasePath(), outputFileName, expectedSlidingWindowOutputFileName);
    } finally {
      ExampleTestUtil.deleteOutputFile(ExampleTestArgs.getFileBasePath(), outputFileName);
    }
  }

  @Test(timeout = ExampleTestArgs.TIMEOUT)
  public void testStreamingSchedulerAndPipeFixedWindow() throws Exception {
    builder = new ArgBuilder()
      .addScheduler("org.apache.nemo.runtime.master.scheduler.StreamingScheduler")
      .addUserMain(WindowedWordCount.class.getCanonicalName())
      .addUserArgs(outputFilePath, "fixed", INPUT_TYPE_BOUNDED, inputFilePath);

    JobLauncher.main(builder
      .addResourceJson(executorResourceFileName)
      .addJobId(WindowedWordCountITCase.class.getSimpleName() + "testStreamingSchedulerAndPipeFixedWindow")
      .addOptimizationPolicy(StreamingPolicyParallelismFive.class.getCanonicalName())
      .build());

    try {
      ExampleTestUtil.ensureOutputValidity(ExampleTestArgs.getFileBasePath(), outputFileName, expectedOutputFileName);
    } finally {
      ExampleTestUtil.deleteOutputFile(ExampleTestArgs.getFileBasePath(), outputFileName);
    }
  }


  @Test(timeout = ExampleTestArgs.TIMEOUT)
  public void testStreamingSchedulerAndPipeSlidingWindow() throws Exception {
    builder = new ArgBuilder()
      .addScheduler("org.apache.nemo.runtime.master.scheduler.StreamingScheduler")
      .addUserMain(WindowedWordCount.class.getCanonicalName())
      .addUserArgs(outputFilePath, "sliding", INPUT_TYPE_BOUNDED, inputFilePath);

    JobLauncher.main(builder
      .addResourceJson(executorResourceFileName)
      .addJobId(WindowedWordCountITCase.class.getSimpleName() + "testStreamingSchedulerAndPipeSlidingWindow")
      .addOptimizationPolicy(StreamingPolicyParallelismFive.class.getCanonicalName())
      .build());

    try {
      ExampleTestUtil.ensureOutputValidity(ExampleTestArgs.getFileBasePath(), outputFileName, expectedSlidingWindowOutputFileName);
    } finally {
      ExampleTestUtil.deleteOutputFile(ExampleTestArgs.getFileBasePath(), outputFileName);
    }
  }


  // TODO #271: We currently disable this test because we cannot force close Nemo
  // @Test (timeout = TIMEOUT)
  public void testUnboundedSlidingWindow() throws Exception {
    builder = new ArgBuilder()
      .addScheduler("org.apache.nemo.runtime.master.scheduler.StreamingScheduler")
      .addUserMain(WindowedWordCount.class.getCanonicalName())
      .addUserArgs(outputFilePath, "sliding", INPUT_TYPE_UNBOUNDED);

    JobLauncher.main(builder
      .addResourceJson(executorResourceFileName)
      .addJobId(WindowedWordCountITCase.class.getSimpleName())
      .addOptimizationPolicy(StreamingPolicyParallelismFive.class.getCanonicalName())
      .build());

    try {
      ExampleTestUtil.ensureOutputValidity(ExampleTestArgs.getFileBasePath(), outputFileName, expectedSlidingWindowOutputFileName);
    } finally {
    }
  }
}