Examples of eu.stratosphere.types.Record

eu.stratosphere.types.Record
Record is the basic data record that flows between functions in a Stratosphere program. The record is a tuple of arbitrary values. It implements a sparse tuple model, meaning that the record can contain many fields which are actually null and not represented in the record. It has internally a bitmap marking which fields are set and which are not.
For efficient data exchange, a record that is read from any source holds its data in serialized binary form. Fields are deserialized lazily upon first access. Modified fields are cached and the modifications are incorporated into the binary representation upon the next serialization or any explicit call to the {@link #updateBinaryRepresenation()} method.
IMPORTANT NOTE: Records must be used as mutable objects and be reused across user function calls in order to achieve performance. The record is a heavy-weight object, designed to minimize calls to the individual fields' serialization and deserialization methods. It holds quite a bit of state consumes a comparably large amount of memory (> 200 bytes in a 64 bit JVM) due to several pointers and arrays.
This class is NOT thread-safe!

  @Test
  public void testNextKeyOnly() throws Exception
  {
    try {
      Assert.assertTrue("KeyGroupedIterator must have another key.", this.psi.nextKey());
      Assert.assertTrue("KeyGroupedIterator returned a wrong key.", this.psi.getComparatorWithCurrentReference().equalToReference(new Record(new IntValue(1))));
      Assert.assertEquals("KeyGroupedIterator returned a wrong key.", 1, this.psi.getCurrent().getField(0, IntValue.class).getValue());
      
      Assert.assertTrue("KeyGroupedIterator must have another key.", this.psi.nextKey());
      Assert.assertTrue("KeyGroupedIterator returned a wrong key.", this.psi.getComparatorWithCurrentReference().equalToReference(new Record(new IntValue(2))));
      Assert.assertEquals("KeyGroupedIterator returned a wrong key.", 2, this.psi.getCurrent().getField(0, IntValue.class).getValue());
      
      Assert.assertTrue("KeyGroupedIterator must have another key.", this.psi.nextKey());
      Assert.assertTrue("KeyGroupedIterator returned a wrong key.", this.psi.getComparatorWithCurrentReference().equalToReference(new Record(new IntValue(3))));
      Assert.assertEquals("KeyGroupedIterator returned a wrong key.", 3, this.psi.getCurrent().getField(0, IntValue.class).getValue());
      
      Assert.assertTrue("KeyGroupedIterator must have another key.", this.psi.nextKey());
      Assert.assertTrue("KeyGroupedIterator returned a wrong key.", this.psi.getComparatorWithCurrentReference().equalToReference(new Record(new IntValue(4))));
      Assert.assertEquals("KeyGroupedIterator returned a wrong key.", 4, this.psi.getCurrent().getField(0, IntValue.class).getValue());
      
      Assert.assertTrue("KeyGroupedIterator must have another key.", this.psi.nextKey());
      Assert.assertTrue("KeyGroupedIterator returned a wrong key.", this.psi.getComparatorWithCurrentReference().equalToReference(new Record(new IntValue(5))));
      Assert.assertEquals("KeyGroupedIterator returned a wrong key.", 5, this.psi.getCurrent().getField(0, IntValue.class).getValue());
      
      Assert.assertFalse("KeyGroupedIterator must not have another key.", this.psi.nextKey());
      Assert.assertNull("KeyGroupedIterator must not have another value.", this.psi.getValues());

View Full Code Here

  {
    try {
      // Key 1, Value A
      Assert.assertTrue("KeyGroupedIterator must have another key.", this.psi.nextKey());
      Assert.assertTrue("KeyGroupedIterator must have another value.", this.psi.getValues().hasNext());
      Assert.assertTrue("KeyGroupedIterator returned a wrong key.", this.psi.getComparatorWithCurrentReference().equalToReference(new Record(new IntValue(1))));
      Assert.assertEquals("KeyGroupedIterator returned a wrong key.", 1, this.psi.getCurrent().getField(0, IntValue.class).getValue());
      Assert.assertEquals("KeyGroupedIterator returned a wrong value.", new StringValue("A"), this.psi.getValues().next().getField(1, StringValue.class));
      Assert.assertFalse("KeyGroupedIterator must not have another value.", this.psi.getValues().hasNext());
      
      // Key 2, Value B
      Assert.assertTrue("KeyGroupedIterator must have another key.", this.psi.nextKey());
      Assert.assertTrue("KeyGroupedIterator must have another value.", this.psi.getValues().hasNext());
      Assert.assertTrue("KeyGroupedIterator returned a wrong key.", this.psi.getComparatorWithCurrentReference().equalToReference(new Record(new IntValue(2))));
      Assert.assertEquals("KeyGroupedIterator returned a wrong key.", 2, this.psi.getCurrent().getField(0, IntValue.class).getValue());
      Assert.assertEquals("KeyGroupedIterator returned a wrong value.", new StringValue("B"), this.psi.getValues().next().getField(1, StringValue.class));
      Assert.assertFalse("KeyGroupedIterator must not have another value.", this.psi.getValues().hasNext());
      
      // Key 3, Values C, D
      Assert.assertTrue("KeyGroupedIterator must have another key.", this.psi.nextKey());
      Assert.assertTrue("KeyGroupedIterator must have another value.", this.psi.getValues().hasNext());
      Assert.assertTrue("KeyGroupedIterator returned a wrong key.", this.psi.getComparatorWithCurrentReference().equalToReference(new Record(new IntValue(3))));
      Assert.assertEquals("KeyGroupedIterator returned a wrong key.", 3, this.psi.getCurrent().getField(0, IntValue.class).getValue());
      Assert.assertEquals("KeyGroupedIterator returned a wrong value.", new StringValue("C"), this.psi.getValues().next().getField(1, StringValue.class));
      Assert.assertTrue("KeyGroupedIterator must have another value.", this.psi.getValues().hasNext());
      Assert.assertTrue("KeyGroupedIterator returned a wrong key.", this.psi.getComparatorWithCurrentReference().equalToReference(new Record(new IntValue(3))));
      Assert.assertEquals("KeyGroupedIterator returned a wrong key.", 3, this.psi.getCurrent().getField(0, IntValue.class).getValue());
      Assert.assertEquals("KeyGroupedIterator returned a wrong value.", new StringValue("D"), this.psi.getValues().next().getField(1, StringValue.class));
      Assert.assertTrue("KeyGroupedIterator returned a wrong key.", this.psi.getComparatorWithCurrentReference().equalToReference(new Record(new IntValue(3))));
      Assert.assertEquals("KeyGroupedIterator returned a wrong key.", 3, this.psi.getCurrent().getField(0, IntValue.class).getValue());
      try {
        this.psi.getValues().next();
        Assert.fail("A new KeyGroupedIterator must not have any value available and hence throw an exception on next().");
      }
      catch (NoSuchElementException nseex) {}
      Assert.assertFalse("KeyGroupedIterator must not have another value.", this.psi.getValues().hasNext());
      try {
        this.psi.getValues().next();
        Assert.fail("A new KeyGroupedIterator must not have any value available and hence throw an exception on next().");
      }
      catch (NoSuchElementException nseex) {}
      Assert.assertTrue("KeyGroupedIterator returned a wrong key.", this.psi.getComparatorWithCurrentReference().equalToReference(new Record(new IntValue(3))));
      Assert.assertEquals("KeyGroupedIterator returned a wrong key.", 3, this.psi.getCurrent().getField(0, IntValue.class).getValue());
      
      // Key 4, Values E, F, G
      Assert.assertTrue("KeyGroupedIterator must have another key.", this.psi.nextKey());
      Assert.assertTrue("KeyGroupedIterator must have another value.", this.psi.getValues().hasNext());
      Assert.assertTrue("KeyGroupedIterator returned a wrong key.", this.psi.getComparatorWithCurrentReference().equalToReference(new Record(new IntValue(4))));
      Assert.assertEquals("KeyGroupedIterator returned a wrong key.", 4, this.psi.getCurrent().getField(0, IntValue.class).getValue());
      Assert.assertEquals("KeyGroupedIterator returned a wrong value.", new StringValue("E"), this.psi.getValues().next().getField(1, StringValue.class));
      Assert.assertTrue("KeyGroupedIterator must have another value.", this.psi.getValues().hasNext());
      Assert.assertTrue("KeyGroupedIterator returned a wrong key.", this.psi.getComparatorWithCurrentReference().equalToReference(new Record(new IntValue(4))));
      Assert.assertEquals("KeyGroupedIterator returned a wrong key.", 4, this.psi.getCurrent().getField(0, IntValue.class).getValue());
      Assert.assertEquals("KeyGroupedIterator returned a wrong value.", new StringValue("F"), this.psi.getValues().next().getField(1, StringValue.class));
      Assert.assertTrue("KeyGroupedIterator must have another value.", this.psi.getValues().hasNext());
      Assert.assertTrue("KeyGroupedIterator returned a wrong key.", this.psi.getComparatorWithCurrentReference().equalToReference(new Record(new IntValue(4))));
      Assert.assertEquals("KeyGroupedIterator returned a wrong key.", 4, this.psi.getCurrent().getField(0, IntValue.class).getValue());
      Assert.assertEquals("KeyGroupedIterator returned a wrong value.", new StringValue("G"), this.psi.getValues().next().getField(1, StringValue.class));
      Assert.assertTrue("KeyGroupedIterator returned a wrong key.", this.psi.getComparatorWithCurrentReference().equalToReference(new Record(new IntValue(4))));
      Assert.assertEquals("KeyGroupedIterator returned a wrong key.", 4, this.psi.getCurrent().getField(0, IntValue.class).getValue());
      Assert.assertFalse("KeyGroupedIterator must not have another value.", this.psi.getValues().hasNext());
      Assert.assertTrue("KeyGroupedIterator returned a wrong key.", this.psi.getComparatorWithCurrentReference().equalToReference(new Record(new IntValue(4))));
      Assert.assertEquals("KeyGroupedIterator returned a wrong key.", 4, this.psi.getCurrent().getField(0, IntValue.class).getValue());
      
      // Key 5, Values H, I, J, K, L
      Assert.assertTrue("KeyGroupedIterator must have another key.", this.psi.nextKey());
      Assert.assertTrue("KeyGroupedIterator must have another value.", this.psi.getValues().hasNext());
      Assert.assertTrue("KeyGroupedIterator returned a wrong key.", this.psi.getComparatorWithCurrentReference().equalToReference(new Record(new IntValue(5))));
      Assert.assertEquals("KeyGroupedIterator returned a wrong key.", 5, this.psi.getCurrent().getField(0, IntValue.class).getValue());
      Assert.assertEquals("KeyGroupedIterator returned a wrong value.", new StringValue("H"), this.psi.getValues().next().getField(1, StringValue.class));
      Assert.assertTrue("KeyGroupedIterator must have another value.", this.psi.getValues().hasNext());
      Assert.assertTrue("KeyGroupedIterator returned a wrong key.", this.psi.getComparatorWithCurrentReference().equalToReference(new Record(new IntValue(5))));
      Assert.assertEquals("KeyGroupedIterator returned a wrong key.", 5, this.psi.getCurrent().getField(0, IntValue.class).getValue());
      Assert.assertEquals("KeyGroupedIterator returned a wrong value.", new StringValue("I"), this.psi.getValues().next().getField(1, StringValue.class));
      Assert.assertTrue("KeyGroupedIterator must have another value.", this.psi.getValues().hasNext());
      Assert.assertTrue("KeyGroupedIterator returned a wrong key.", this.psi.getComparatorWithCurrentReference().equalToReference(new Record(new IntValue(5))));
      Assert.assertEquals("KeyGroupedIterator returned a wrong key.", 5, this.psi.getCurrent().getField(0, IntValue.class).getValue());
      Assert.assertEquals("KeyGroupedIterator returned a wrong value.", new StringValue("J"), this.psi.getValues().next().getField(1, StringValue.class));
      Assert.assertTrue("KeyGroupedIterator must have another value.", this.psi.getValues().hasNext());
      Assert.assertTrue("KeyGroupedIterator returned a wrong key.", this.psi.getComparatorWithCurrentReference().equalToReference(new Record(new IntValue(5))));
      Assert.assertEquals("KeyGroupedIterator returned a wrong key.", 5, this.psi.getCurrent().getField(0, IntValue.class).getValue());
      Assert.assertEquals("KeyGroupedIterator returned a wrong value.", new StringValue("K"), this.psi.getValues().next().getField(1, StringValue.class));
      Assert.assertTrue("KeyGroupedIterator must have another value.", this.psi.getValues().hasNext());
      Assert.assertTrue("KeyGroupedIterator returned a wrong key.", this.psi.getComparatorWithCurrentReference().equalToReference(new Record(new IntValue(5))));
      Assert.assertEquals("KeyGroupedIterator returned a wrong key.", 5, this.psi.getCurrent().getField(0, IntValue.class).getValue());
      Assert.assertEquals("KeyGroupedIterator returned a wrong value.", new StringValue("L"), this.psi.getValues().next().getField(1, StringValue.class));
      Assert.assertTrue("KeyGroupedIterator returned a wrong key.", this.psi.getComparatorWithCurrentReference().equalToReference(new Record(new IntValue(5))));
      Assert.assertEquals("KeyGroupedIterator returned a wrong key.", 5, this.psi.getCurrent().getField(0, IntValue.class).getValue());
      try {
        this.psi.getValues().next();
        Assert.fail("A new KeyGroupedIterator must not have any value available and hence throw an exception on next().");
      }
      catch (NoSuchElementException nseex) {}
      Assert.assertFalse("KeyGroupedIterator must not have another value.", this.psi.getValues().hasNext());
      Assert.assertTrue("KeyGroupedIterator returned a wrong key.", this.psi.getComparatorWithCurrentReference().equalToReference(new Record(new IntValue(5))));
      Assert.assertEquals("KeyGroupedIterator returned a wrong key.", 5, this.psi.getCurrent().getField(0, IntValue.class).getValue());
      try {
        this.psi.getValues().next();
        Assert.fail("A new KeyGroupedIterator must not have any value available and hence throw an exception on next().");
      }

View Full Code Here

      Assert.assertTrue("KeyGroupedIterator must have another key.", this.psi.nextKey());
      
      // Progression first though haNext() and next(), then through hasNext() - Key 3, Values C, D
      Assert.assertTrue("KeyGroupedIterator must have another key.", this.psi.nextKey());
      Assert.assertTrue("KeyGroupedIterator must have another value.", this.psi.getValues().hasNext());
      Assert.assertTrue("KeyGroupedIterator returned a wrong key.", this.psi.getComparatorWithCurrentReference().equalToReference(new Record(new IntValue(3))));
      Assert.assertEquals("KeyGroupedIterator returned a wrong key.", 3, this.psi.getCurrent().getField(0, IntValue.class).getValue());
      Assert.assertEquals("KeyGroupedIterator returned a wrong value.", new StringValue("C"), this.psi.getValues().next().getField(1, StringValue.class));
      Assert.assertTrue("KeyGroupedIterator must have another value.", this.psi.getValues().hasNext());
      Assert.assertTrue("KeyGroupedIterator returned a wrong key.", this.psi.getComparatorWithCurrentReference().equalToReference(new Record(new IntValue(3))));
      Assert.assertEquals("KeyGroupedIterator returned a wrong key.", 3, this.psi.getCurrent().getField(0, IntValue.class).getValue());
      
      // Progression first via next() only, then hasNext() only Key 4, Values E, F, G
      Assert.assertTrue("KeyGroupedIterator must have another key.", this.psi.nextKey());
      Assert.assertEquals("KeyGroupedIterator returned a wrong value.", new StringValue("E"), this.psi.getValues().next().getField(1, StringValue.class));
      Assert.assertTrue("KeyGroupedIterator must have another value.", this.psi.getValues().hasNext());
      
      // Key 5, Values H, I, J, K, L
      Assert.assertTrue("KeyGroupedIterator must have another key.", this.psi.nextKey());
      Assert.assertEquals("KeyGroupedIterator returned a wrong value.", new StringValue("H"), this.psi.getValues().next().getField(1, StringValue.class));
      Assert.assertTrue("KeyGroupedIterator must have another value.", this.psi.getValues().hasNext());
      Assert.assertTrue("KeyGroupedIterator returned a wrong key.", this.psi.getComparatorWithCurrentReference().equalToReference(new Record(new IntValue(5))));
      Assert.assertEquals("KeyGroupedIterator returned a wrong key.", 5, this.psi.getCurrent().getField(0, IntValue.class).getValue());
      Assert.assertEquals("KeyGroupedIterator returned a wrong value.", new StringValue("I"), this.psi.getValues().next().getField(1, StringValue.class));
      Assert.assertTrue("KeyGroupedIterator must have another value.", this.psi.getValues().hasNext());
      
      // end

View Full Code Here

  @Test
  public void testHasNextDoesNotOverweiteCurrentRecord() throws Exception
  {
    try {
      Iterator<Record> valsIter = null;
      Record rec = null;
      
      Assert.assertTrue("KeyGroupedIterator must have another key.", this.psi.nextKey());
      valsIter = this.psi.getValues();
      Assert.assertNotNull("Returned Iterator must not be null", valsIter);
      Assert.assertTrue("KeyGroupedIterator's value iterator must have another value.", valsIter.hasNext());
      rec = valsIter.next();
      Assert.assertEquals("KeyGroupedIterator returned a wrong key.", 1, rec.getField(0, IntValue.class).getValue());
      Assert.assertEquals("KeyGroupedIterator returned a wrong value.", new StringValue("A"), rec.getField(1, StringValue.class));
      Assert.assertFalse("KeyGroupedIterator must have another value.", valsIter.hasNext());
      Assert.assertEquals("KeyGroupedIterator returned a wrong key.", 1, rec.getField(0, IntValue.class).getValue());
      Assert.assertEquals("KeyGroupedIterator returned a wrong value.", new StringValue("A"), rec.getField(1, StringValue.class));      
      Assert.assertFalse("KeyGroupedIterator's value iterator must not have another value.", valsIter.hasNext());
      
      Assert.assertTrue("KeyGroupedIterator must have another key.", this.psi.nextKey());
      valsIter = this.psi.getValues();
      Assert.assertNotNull("Returned Iterator must not be null", valsIter);
      Assert.assertTrue("KeyGroupedIterator's value iterator must have another value.", valsIter.hasNext());
      rec = valsIter.next();
      Assert.assertEquals("KeyGroupedIterator returned a wrong key.", 2, rec.getField(0, IntValue.class).getValue());
      Assert.assertEquals("KeyGroupedIterator returned a wrong value.", new StringValue("B"), rec.getField(1, StringValue.class));
      Assert.assertFalse("KeyGroupedIterator must have another value.", valsIter.hasNext());
      Assert.assertEquals("KeyGroupedIterator returned a wrong key.", 2, rec.getField(0, IntValue.class).getValue());
      Assert.assertEquals("KeyGroupedIterator returned a wrong value.", new StringValue("B"), rec.getField(1, StringValue.class));
      Assert.assertFalse("KeyGroupedIterator's value iterator must not have another value.", valsIter.hasNext());
      
      Assert.assertTrue("KeyGroupedIterator must have another key.", this.psi.nextKey());
      valsIter = this.psi.getValues();
      Assert.assertNotNull("Returned Iterator must not be null", valsIter);
      Assert.assertTrue("KeyGroupedIterator's value iterator must have another value.", valsIter.hasNext());
      rec = valsIter.next();
      Assert.assertEquals("KeyGroupedIterator returned a wrong key.", 3, rec.getField(0, IntValue.class).getValue());
      Assert.assertEquals("KeyGroupedIterator returned a wrong value.", new StringValue("C"), rec.getField(1, StringValue.class));
      Assert.assertTrue("KeyGroupedIterator's value iterator must have another value.", valsIter.hasNext());
      Assert.assertEquals("KeyGroupedIterator returned a wrong key.", 3, rec.getField(0, IntValue.class).getValue());
      Assert.assertEquals("KeyGroupedIterator returned a wrong value.", new StringValue("C"), rec.getField(1, StringValue.class));
      rec = valsIter.next();
      Assert.assertEquals("KeyGroupedIterator returned a wrong key.", 3, rec.getField(0, IntValue.class).getValue());
      Assert.assertEquals("KeyGroupedIterator returned a wrong value.", new StringValue("D"), rec.getField(1, StringValue.class));
      Assert.assertFalse("KeyGroupedIterator's value iterator must have another value.", valsIter.hasNext());
      Assert.assertEquals("KeyGroupedIterator returned a wrong key.", 3, rec.getField(0, IntValue.class).getValue());
      Assert.assertEquals("KeyGroupedIterator returned a wrong value.", new StringValue("D"), rec.getField(1, StringValue.class));
      Assert.assertFalse("KeyGroupedIterator's value iterator must have another value.", valsIter.hasNext());
      Assert.assertEquals("KeyGroupedIterator returned a wrong key.", 3, rec.getField(0, IntValue.class).getValue());
      Assert.assertEquals("KeyGroupedIterator returned a wrong value.", new StringValue("D"), rec.getField(1, StringValue.class));
    } catch (Exception e) {
      e.printStackTrace();
      Assert.fail("The test encountered an unexpected exception.");
    }
  }

View Full Code Here

    
    Sorter<Record> merger = new CombiningUnilateralSortMerger<Record>(comb, 
        this.memoryManager, this.ioManager, reader, this.parentTask, this.serializerFactory, this.comparator,
        64 * 1024 * 1024, 64, 0.7f);


    final Record rec = new Record();
    rec.setField(1, new IntValue(1));
    final TestData.Key key = new TestData.Key();
    
    for (int i = 0; i < noKeyCnt; i++) {
      for (int j = 0; j < noKeys; j++) {
        key.setKey(j);
        rec.setField(0, key);
        reader.emit(rec);
      }
    }
    reader.close();

View Full Code Here

    
    Sorter<Record> merger = new CombiningUnilateralSortMerger<Record>(comb, 
        this.memoryManager, this.ioManager, reader, this.parentTask, this.serializerFactory, this.comparator,
        3 * 1024 * 1024, 64, 0.005f);


    final Record rec = new Record();
    rec.setField(1, new IntValue(1));
    final TestData.Key key = new TestData.Key();
    
    for (int i = 0; i < noKeyCnt; i++) {
      for (int j = 0; j < noKeys; j++) {
        key.setKey(j);
        rec.setField(0, key);
        reader.emit(rec);
      }
    }
    reader.close();

View Full Code Here

        64 * 1024 * 1024, 2, 0.7f);


    // emit data
    LOG.debug("emitting data");
    TestData.Generator generator = new TestData.Generator(SEED, KEY_MAX, VALUE_LENGTH, KeyMode.RANDOM, ValueMode.FIX_LENGTH);
    Record rec = new Record();
    final TestData.Value value = new TestData.Value("1");
    
    for (int i = 0; i < NUM_PAIRS; i++) {
      Assert.assertTrue((rec = generator.next(rec)) != null);
      final TestData.Key key = rec.getField(0, TestData.Key.class);
      rec.setField(1, value);
      reader.emit(rec);
      
      countTable.put(new TestData.Key(key.getKey()), countTable.get(key) + 1);
    }
    reader.close();
    rec = null;


    // check order
    MutableObjectIterator<Record> iterator = merger.getIterator();
    
    LOG.debug("checking results");
    
    Record rec1 = new Record();
    Record rec2 = new Record();
    
    Assert.assertTrue((rec1 = iterator.next(rec1)) != null);
    countTable.put(new TestData.Key(rec1.getField(0, TestData.Key.class).getKey()), countTable.get(rec1.getField(0, TestData.Key.class)) - (Integer.parseInt(rec1.getField(1, TestData.Value.class).toString())));


    while ((rec2 = iterator.next(rec2)) != null) {
      final Key k1 = rec1.getField(0, TestData.Key.class);
      final Key k2 = rec2.getField(0, TestData.Key.class);
      
      Assert.assertTrue(keyComparator.compare(k1, k2) <= 0); 
      countTable.put(new TestData.Key(k2.getKey()), countTable.get(k2) - (Integer.parseInt(rec2.getField(1, TestData.Value.class).toString())));
      
      Record tmp = rec1;
      rec1 = rec2;
      k1.setKey(k2.getKey());
      rec2 = tmp;
    }

View Full Code Here

        if (hasNext()) {
          hasNext = false;
          
          Iterator<Record> values = groupIter.getValues();
          
          Record rec = null;
          int cnt = 0;
          while (values.hasNext()) {
            rec = values.next();
            cnt += rec.getField(1, IntValue.class).getValue();
          }
          
          return cnt;
        } else {
          throw new NoSuchElementException();

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    public volatile boolean closed = false;
    
    
    @Override
    public void combine(Iterator<Record> values, Collector<Record> out) {
      Record rec = null;
      int cnt = 0;
      while (values.hasNext()) {
        rec = values.next();
        cnt += rec.getField(1, IntValue.class).getValue();
      }
      
      this.count.setValue(cnt);
      rec.setField(1, this.count);
      out.collect(rec);
    }

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    public volatile boolean closed = false;
    
    @Override
    public void combine(Iterator<Record> values, Collector<Record> out) {
      Record rec = null;
      int cnt = 0;
      while (values.hasNext()) {
        rec = values.next();
        cnt += Integer.parseInt(rec.getField(1, TestData.Value.class).toString());
      }


      out.collect(new Record(rec.getField(0, Key.class), new TestData.Value(cnt + "")));
    }

View Full Code Here

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