Package org.apache.crunch

Examples of org.apache.crunch.Pipeline.readTextFile()

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  // doesn't crash
  @Test
  public void testCombinationOfReflectionAndSpecific() throws IOException {
    Assume.assumeTrue(Avros.CAN_COMBINE_SPECIFIC_AND_REFLECT_SCHEMAS);
    Pipeline pipeline = new MRPipeline(AvroReflectIT.class, tmpDir.getDefaultConfiguration());
    PCollection<Pair<StringWrapper, Person>> hybridPairCollection = pipeline.readTextFile(
        tmpDir.copyResourceFileName("set1.txt")).parallelDo(new MapFn<String, Pair<StringWrapper, Person>>() {

      @Override
      public Pair<StringWrapper, Person> map(String input) {
        Person person = new Person();
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  @Test
  public void testAvroBasedWritablePipeline() throws Exception {
    String customersInputPath = tmpDir.copyResourceFileName("customers.txt");
    Pipeline pipeline = new MRPipeline(AvroWritableIT.class, tmpDir.getDefaultConfiguration());
    pipeline.enableDebug();
    PCollection<String> customerLines = pipeline.readTextFile(customersInputPath);
    Map<Integer, DoubleWritable> outputMap = customerLines.parallelDo(
        new MapFn<String, Pair<Integer, DoubleWritable>>() {
          @Override
          public Pair<Integer, DoubleWritable> map(String input) {
            int len = input.length();
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  @Test
  public void testAvroReflectSortPair() throws IOException {
    Pipeline pipeline = new MRPipeline(SortIT.class, tmpDir.getDefaultConfiguration());
    pipeline.enableDebug();
    PCollection<Pair<String, StringWrapper>> sorted = pipeline.readTextFile(tmpDir.copyResourceFileName("set2.txt"))
        .parallelDo(new MapFn<String, Pair<String, StringWrapper>>() {

          @Override
          public Pair<String, StringWrapper> map(String input) {
            return Pair.of(input, wrap(input));
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  }

  @Test
  public void testAvroReflectSortTable() throws IOException {
    Pipeline pipeline = new MRPipeline(SortIT.class, tmpDir.getDefaultConfiguration());
    PTable<String, StringWrapper> unsorted = pipeline.readTextFile(tmpDir.copyResourceFileName("set2.txt")).parallelDo(
        new MapFn<String, Pair<String, StringWrapper>>() {

          @Override
          public Pair<String, StringWrapper> map(String input) {
            return Pair.of(input, wrap(input));
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  @Test
  public void testWritables() throws Exception {
    Pipeline pipeline = new MRPipeline(AggregateIT.class, tmpDir.getDefaultConfiguration());
    String shakesInputPath = tmpDir.copyResourceFileName("shakes.txt");
    PCollection<String> shakes = pipeline.readTextFile(shakesInputPath);
    runMinMax(shakes, WritableTypeFamily.getInstance());
    pipeline.done();
  }

  @Test
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  @Test
  public void testAvro() throws Exception {
    Pipeline pipeline = new MRPipeline(AggregateIT.class, tmpDir.getDefaultConfiguration());
    String shakesInputPath = tmpDir.copyResourceFileName("shakes.txt");
    PCollection<String> shakes = pipeline.readTextFile(shakesInputPath);
    runMinMax(shakes, AvroTypeFamily.getInstance());
    pipeline.done();
  }

  @Test
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  @Test
  public void testCollectUrls() throws Exception {
    Pipeline p = new MRPipeline(AggregateIT.class, tmpDir.getDefaultConfiguration());
    String urlsInputPath = tmpDir.copyResourceFileName("urls.txt");
    PTable<String, Collection<String>> urls = Aggregate.collectValues(p.readTextFile(urlsInputPath).parallelDo(
        new SplitFn(), tableOf(strings(), strings())));
    for (Pair<String, Collection<String>> e : urls.materialize()) {
      String key = e.first();
      int expectedSize = 0;
      if ("www.A.com".equals(key)) {
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  }

  @Test
  public void testCollectValues_Writables() throws IOException {
    Pipeline pipeline = new MRPipeline(AggregateIT.class, tmpDir.getDefaultConfiguration());
    Map<Integer, Collection<Text>> collectionMap = pipeline.readTextFile(tmpDir.copyResourceFileName("set2.txt"))
        .parallelDo(new MapStringToTextPair(), Writables.tableOf(Writables.ints(), Writables.writables(Text.class)))
        .collectValues().materializeToMap();

    assertEquals(1, collectionMap.size());
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  @Test
  public void testCollectValues_Avro() throws IOException {

    MapStringToEmployeePair mapFn = new MapStringToEmployeePair();
    Pipeline pipeline = new MRPipeline(AggregateIT.class, tmpDir.getDefaultConfiguration());
    Map<Integer, Collection<Employee>> collectionMap = pipeline.readTextFile(tmpDir.copyResourceFileName("set2.txt"))
        .parallelDo(mapFn, Avros.tableOf(Avros.ints(), Avros.records(Employee.class))).collectValues()
        .materializeToMap();

    assertEquals(1, collectionMap.size());
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