Package org.apache.hadoop.mapreduce

Examples of org.apache.hadoop.mapreduce.Counters

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  @Test
  public final void testMapperValidValues() throws IOException,
      InterruptedException {
    Mapper.Context context = mock(Mapper.Context.class);
    Counters counters = new Counters();
    Counter counter = counters
        .findCounter(MergeRecordCounter.TOTAL_RECORDS_NEW);
    when(context.getCounter(MergeRecordCounter.TOTAL_RECORDS_NEW))
        .thenReturn(counter);

    MergeKeyMapper mapper = new MergeKeyMapper();
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              .newInstance(job.getOutputFormatClass(),
                  job.getConfiguration()).getClass()
              .getName());
      job.waitForCompletion(false);
      if (job.isComplete()) {
        Counters counters = job.getCounters();
        totalRecordsOld = counters.findCounter(
            MergeRecordCounter.TOTAL_RECORDS_OLD).getValue();
        totalRecordsNew = counters.findCounter(
            MergeRecordCounter.TOTAL_RECORDS_NEW).getValue();
        badRecords = counters.findCounter(
            MergeRecordCounter.BAD_RECORD).getValue();
        output = counters.findCounter(MergeRecordCounter.OUTPUT)
            .getValue();
        logger.info("Total old records read are: " + totalRecordsOld);
        logger.info("Total new records read are: " + totalRecordsNew);
        logger.info("Bad Records are: " + badRecords);
        logger.info("Output records are: " + output);
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public class TestMergeKeyMapper {
  @Test(expected = IOException.class)
  public final void testMapperForNullKeyValue() throws IOException,
      InterruptedException {
    Mapper.Context context = mock(Mapper.Context.class);
    Counters counters = new Counters();
    Counter counter = counters.findCounter(MergeRecordCounter.BAD_RECORD);
    when(context.getCounter(MergeRecordCounter.BAD_RECORD)).thenReturn(
        counter);
    MergeKeyMapper mapper = new MergeKeyMapper();
    Text val = new Text("valueOfKey");
    mapper.map(null, val, context);
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    values.add(value1);
    values.add(value2);
    values.add(value3);

    Reducer.Context context = mock(Reducer.Context.class);
    Counters counters = new Counters();
    Counter counter = counters.findCounter(DedupRecordCounter.OUTPUT);
    when(context.getCounter(DedupRecordCounter.OUTPUT)).thenReturn(counter);
    DedupValueReducer dedupValueReducer = new DedupValueReducer();
    dedupValueReducer.reduce(hihoTuple, values, context);
    verify(context).write(value1, key);
    assertEquals(1, context.getCounter(DedupRecordCounter.OUTPUT)
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    String value1 = null;
    ArrayList<String> values = new ArrayList<String>();
    values.add(value1);

    Reducer.Context context = mock(Reducer.Context.class);
    Counters counters = new Counters();
    Counter counter = counters.findCounter(DedupRecordCounter.OUTPUT);
    when(context.getCounter(DedupRecordCounter.OUTPUT)).thenReturn(counter);
    DedupValueReducer dedupValueReducer = new DedupValueReducer();
    dedupValueReducer.reduce(hihoTuple, values, context);
    verify(context).write(value1, key);
    assertEquals(1, context.getCounter(DedupRecordCounter.OUTPUT)
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    Text value1 = new Text("value1");
    ArrayList<Text> values = new ArrayList<Text>();
    values.add(value1);

    Reducer.Context context = mock(Reducer.Context.class);
    Counters counters = new Counters();
    Counter counter = counters.findCounter(DedupRecordCounter.OUTPUT);
    when(context.getCounter(DedupRecordCounter.OUTPUT)).thenReturn(counter);
    DedupValueReducer dedupReducer = new DedupValueReducer();
    dedupReducer.reduce(hihoTuple, values, context);
    verify(context).write(value1, key);
    assertEquals(1, context.getCounter(DedupRecordCounter.OUTPUT)
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    BytesWritable value1 = new BytesWritable("value1".getBytes());
    ArrayList<BytesWritable> values = new ArrayList<BytesWritable>();
    values.add(value1);

    Reducer.Context context = mock(Reducer.Context.class);
    Counters counters = new Counters();
    Counter counter = counters.findCounter(DedupRecordCounter.OUTPUT);
    when(context.getCounter(DedupRecordCounter.OUTPUT)).thenReturn(counter);
    DedupValueReducer dedupReducer = new DedupValueReducer();
    dedupReducer.reduce(hihoTuple, values, context);
    verify(context).write(value1, key);
    assertEquals(1, context.getCounter(DedupRecordCounter.OUTPUT)
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    IntWritable value1 = new IntWritable(456);
    ArrayList<IntWritable> values = new ArrayList<IntWritable>();
    values.add(value1);

    Reducer.Context context = mock(Reducer.Context.class);
    Counters counters = new Counters();
    Counter counter = counters.findCounter(DedupRecordCounter.OUTPUT);
    when(context.getCounter(DedupRecordCounter.OUTPUT)).thenReturn(counter);
    DedupValueReducer dedupReducer = new DedupValueReducer();
    dedupReducer.reduce(hihoTuple, values, context);
    verify(context).write(value1, key);
    assertEquals(1, context.getCounter(DedupRecordCounter.OUTPUT)
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  @Test
  public final void testMapperValidValues() throws IOException,
      InterruptedException {
    Mapper.Context context = mock(Mapper.Context.class);
    Counters counters = new Counters();
    Counter counter = counters
        .findCounter(DedupRecordCounter.TOTAL_RECORDS_READ);
    when(context.getCounter(DedupRecordCounter.TOTAL_RECORDS_READ))
        .thenReturn(counter);
    DedupKeyMapper<Text, String> mapper = new DedupKeyMapper<Text, String>();
    Text key = new Text("abc123");
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  @Test(expected = IOException.class)
  public final void testMapperForNullKeyValue() throws IOException,
      InterruptedException {
    Mapper.Context context = mock(Mapper.Context.class);
    Counters counters = new Counters();
    Counter counter = counters.findCounter(DedupRecordCounter.BAD_RECORD);
    when(context.getCounter(DedupRecordCounter.BAD_RECORD)).thenReturn(
        counter);
    DedupKeyMapper mapper = new DedupKeyMapper();
    String val = "valueOfKey";
    mapper.map(null, val, context);
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Related Classes of org.apache.hadoop.mapreduce.Counters

  • co.cask.cdap.internal.app.runtime.batch.MapReduceMetricsWriter
  • co.nubetech.hiho.dedup.DedupJob
  • co.nubetech.hiho.dedup.TestDedupKeyMapper
  • co.nubetech.hiho.dedup.TestDedupKeyReducer
  • co.nubetech.hiho.dedup.TestDedupValueMapper
  • co.nubetech.hiho.dedup.TestDedupValueReducer
  • co.nubetech.hiho.merge.MergeJob
  • co.nubetech.hiho.merge.TestMergeKeyMapper
  • co.nubetech.hiho.merge.TestMergeKeyReducer
  • co.nubetech.hiho.merge.TestMergeValueMapper
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