Examples with Generator org.apache.beam.sdk.nexmark.sources.generator.Generator used on opensource projects

Example 1 with Generator

use of org.apache.beam.sdk.nexmark.sources.generator.Generator in project beam by apache.

the class GeneratorTest method splitPreservesOverallEventCount.

@Test
public void splitPreservesOverallEventCount() {
    long n = 51237L;
    GeneratorConfig initialConfig = makeConfig(n);
    long expected = initialConfig.getStopEventId() - initialConfig.getStartEventId();
    List<Generator> generators = new ArrayList<>();
    for (GeneratorConfig subConfig : initialConfig.split(20)) {
        generators.add(new Generator(subConfig));
    }
    long actual = 0;
    for (Generator generator : generators) {
        actual += consume(generator);
    }
    assertEquals(expected, actual);
}

Example 2 with Generator

use of org.apache.beam.sdk.nexmark.sources.generator.Generator in project beam by apache.

the class UnboundedEventSourceTest method resumeFromCheckpoint.

/**
 * Check aggressively checkpointing and resuming a reader gives us exactly the same event stream
 * as reading directly.
 */
@Ignore("TODO(BEAM-5070) Test is flaky. Fix before reenabling.")
@Test
public void resumeFromCheckpoint() throws IOException {
    Random random = new Random(297);
    int n = 47293;
    GeneratorConfig config = makeConfig(n);
    Generator modelGenerator = new Generator(config);
    EventIdChecker checker = new EventIdChecker();
    PipelineOptions options = TestPipeline.testingPipelineOptions();
    UnboundedEventSource source = new UnboundedEventSource(config, 1, 0, false);
    UnboundedReader<Event> reader = source.createReader(options, null);
    while (n > 0) {
        int m = Math.min(459 + random.nextInt(455), n);
        System.out.printf("reading %d...%n", m);
        checker.add(m, reader, modelGenerator);
        n -= m;
        System.out.printf("splitting with %d remaining...%n", n);
        CheckpointMark checkpointMark = reader.getCheckpointMark();
        reader = source.createReader(options, (GeneratorCheckpoint) checkpointMark);
    }
    assertFalse(reader.advance());
}

Example 3 with Generator

use of org.apache.beam.sdk.nexmark.sources.generator.Generator in project beam by apache.

the class GeneratorTest method splitAtFractionPreservesOverallEventCount.

@Test
public void splitAtFractionPreservesOverallEventCount() {
    long n = 55729L;
    GeneratorConfig initialConfig = makeConfig(n);
    long expected = initialConfig.getStopEventId() - initialConfig.getStartEventId();
    long actual = 0;
    Generator initialGenerator = new Generator(initialConfig);
    // Consume some events.
    actual += consume(5000, initialGenerator);
    // Split once.
    GeneratorConfig remainConfig1 = initialGenerator.splitAtEventId(9000L);
    Generator remainGenerator1 = new Generator(remainConfig1);
    // Consume some more events.
    actual += consume(2000, initialGenerator);
    actual += consume(3000, remainGenerator1);
    // Split again.
    GeneratorConfig remainConfig2 = remainGenerator1.splitAtEventId(30000L);
    Generator remainGenerator2 = new Generator(remainConfig2);
    // Run to completion.
    actual += consume(initialGenerator);
    actual += consume(remainGenerator1);
    actual += consume(remainGenerator2);
    assertEquals(expected, actual);
}