Package eu.stratosphere.api.java.typeutils.runtime.record

Examples of eu.stratosphere.api.java.typeutils.runtime.record.RecordComparator

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        }
      }
    };
   
    final RecordSerializer serializer = RecordSerializer.get();
    @SuppressWarnings("unchecked")
    final RecordComparator comparator = new RecordComparator(new int[] {0}, new Class[] {IntValue.class});
   
    this.psi = new KeyGroupedIterator<Record>(this.sourceIter, serializer, comparator);
  }
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    }
  }

  private NormalizedKeySorter<Record> newSortBuffer(List<MemorySegment> memory) throws Exception
  {
    @SuppressWarnings("unchecked")
    RecordComparator accessors = new RecordComparator(new int[] {0}, new Class[]{Key.class});
    return new NormalizedKeySorter<Record>(RecordSerializer.get(), accessors, memory);
  }
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  public void testSortShortStringKeys() throws Exception
  {
    final int numSegments = MEMORY_SIZE / MEMORY_PAGE_SIZE;
    final List<MemorySegment> memory = this.memoryManager.allocatePages(new DummyInvokable(), numSegments);
   
    @SuppressWarnings("unchecked")
    RecordComparator accessors = new RecordComparator(new int[] {1}, new Class[]{Value.class});
    NormalizedKeySorter<Record> sorter = new NormalizedKeySorter<Record>(RecordSerializer.get(), accessors, memory);
   
    TestData.Generator generator = new TestData.Generator(SEED, KEY_MAX, 5, KeyMode.RANDOM,
      ValueMode.FIX_LENGTH);
   
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  public void testSortLongStringKeys() throws Exception
  {
    final int numSegments = MEMORY_SIZE / MEMORY_PAGE_SIZE;
    final List<MemorySegment> memory = this.memoryManager.allocatePages(new DummyInvokable(), numSegments);
   
    @SuppressWarnings("unchecked")
    RecordComparator accessors = new RecordComparator(new int[] {1}, new Class[]{Value.class});
    NormalizedKeySorter<Record> sorter = new NormalizedKeySorter<Record>(RecordSerializer.get(), accessors, memory);
   
    TestData.Generator generator = new TestData.Generator(SEED, KEY_MAX, VALUE_LENGTH, KeyMode.RANDOM,
      ValueMode.FIX_LENGTH);
   
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  public void beforeTest()
  {
    this.memoryManager = new DefaultMemoryManager(MEMORY_SIZE);
    this.ioManager = new IOManager();
    this.serializer = RecordSerializerFactory.get();
    this.comparator = new RecordComparator(new int[] {0}, new Class[] {TestData.Key.class});
  }
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  private static final long SEED = 485213591485399L;
 
  @Test
  public void testPartitionHash() {
    // Test for IntValue
    @SuppressWarnings("unchecked")
    final RecordComparator intComp = new RecordComparator(new int[] {0}, new Class[] {IntValue.class});
    final ChannelSelector<Record> oe1 = new RecordOutputEmitter(ShipStrategyType.PARTITION_HASH, intComp);

    int numChans = 100;
    int numRecs = 50000;
    int[] hit = new int[numChans];

    for (int i = 0; i < numRecs; i++) {
      IntValue k = new IntValue(i);
      Record rec = new Record(k);
     
      int[] chans = oe1.selectChannels(rec, hit.length);
      for(int j=0; j < chans.length; j++) {
        hit[chans[j]]++;
      }
    }

    int cnt = 0;
    for (int i = 0; i < hit.length; i++) {
      assertTrue(hit[i] > 0);
      cnt += hit[i];
    }
    assertTrue(cnt == numRecs);

    // Test for StringValue
    @SuppressWarnings("unchecked")
    final RecordComparator stringComp = new RecordComparator(new int[] {0}, new Class[] {StringValue.class});
    ChannelSelector<Record> oe2 = new RecordOutputEmitter(ShipStrategyType.PARTITION_HASH, stringComp);

    numChans = 100;
    numRecs = 10000;
   
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  }
 
  @Test
  public void testForward() {
    // Test for IntValue
    @SuppressWarnings("unchecked")
    final RecordComparator intComp = new RecordComparator(new int[] {0}, new Class[] {IntValue.class});
    final ChannelSelector<Record> oe1 = new RecordOutputEmitter(ShipStrategyType.FORWARD, intComp);

    int numChannels = 100;
    int numRecords = 50000;
   
    int[] hit = new int[numChannels];

    for (int i = 0; i < numRecords; i++) {
      IntValue k = new IntValue(i);
      Record rec = new Record(k);
     
      int[] chans = oe1.selectChannels(rec, hit.length);
      for(int j=0; j < chans.length; j++) {
        hit[chans[j]]++;
      }
    }

    int cnt = 0;
    for (int i = 0; i < hit.length; i++) {
      assertTrue(hit[i] == (numRecords/numChannels) || hit[i] == (numRecords/numChannels)-1);
      cnt += hit[i];
    }
    assertTrue(cnt == numRecords);

    // Test for StringValue
    @SuppressWarnings("unchecked")
    final RecordComparator stringComp = new RecordComparator(new int[] {0}, new Class[] {StringValue.class});
    final ChannelSelector<Record> oe2 = new RecordOutputEmitter(ShipStrategyType.FORWARD, stringComp);

    numChannels = 100;
    numRecords = 10000;
   
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  }
 
  @Test
  public void testBroadcast() {
    // Test for IntValue
    @SuppressWarnings("unchecked")
    final RecordComparator intComp = new RecordComparator(new int[] {0}, new Class[] {IntValue.class});
    final ChannelSelector<Record> oe1 = new RecordOutputEmitter(ShipStrategyType.BROADCAST, intComp);

    int numChannels = 100;
    int numRecords = 50000;
   
    int[] hit = new int[numChannels];

    for (int i = 0; i < numRecords; i++) {
      IntValue k = new IntValue(i);
      Record rec = new Record(k);
     
      int[] chans = oe1.selectChannels(rec, hit.length);
      for(int j=0; j < chans.length; j++) {
        hit[chans[j]]++;
      }
    }

    for (int i = 0; i < hit.length; i++) {
      assertTrue(hit[i]+"", hit[i] == numRecords);
    }
   
    // Test for StringValue
    @SuppressWarnings("unchecked")
    final RecordComparator stringComp = new RecordComparator(new int[] {0}, new Class[] {StringValue.class});
    final ChannelSelector<Record> oe2 = new RecordOutputEmitter(ShipStrategyType.BROADCAST, stringComp);

    numChannels = 100;
    numRecords = 5000;
   
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    }
  }
 
  @Test
  public void testMultiKeys() {
    @SuppressWarnings("unchecked")
    final RecordComparator multiComp = new RecordComparator(new int[] {0,1,3}, new Class[] {IntValue.class, StringValue.class, DoubleValue.class});
    final ChannelSelector<Record> oe1 = new RecordOutputEmitter(ShipStrategyType.PARTITION_HASH, multiComp);

    int numChannels = 100;
    int numRecords = 5000;
   
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  }
 
  @Test
  public void testMissingKey() {
    // Test for IntValue
    @SuppressWarnings("unchecked")
    final RecordComparator intComp = new RecordComparator(new int[] {1}, new Class[] {IntValue.class});
    final ChannelSelector<Record> oe1 = new RecordOutputEmitter(ShipStrategyType.PARTITION_HASH, intComp);

    Record rec = new Record(0);
    rec.setField(0, new IntValue(1));
   
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Related Classes of eu.stratosphere.api.java.typeutils.runtime.record.RecordComparator

  • eu.stratosphere.pact.runtime.hash.HashMatchIteratorITCase
  • eu.stratosphere.pact.runtime.hash.HashTableITCase
  • eu.stratosphere.pact.runtime.hash.ReOpenableHashTableITCase
  • eu.stratosphere.pact.runtime.sort.AsynchonousPartialSorterITCase
  • eu.stratosphere.pact.runtime.sort.CombiningUnilateralSortMergerITCase
  • eu.stratosphere.pact.runtime.sort.ExternalSortITCase
  • eu.stratosphere.pact.runtime.sort.MergeIteratorTest
  • eu.stratosphere.pact.runtime.sort.NormalizedKeySorterTest
  • eu.stratosphere.pact.runtime.sort.SortMergeCoGroupIteratorITCase
  • eu.stratosphere.pact.runtime.sort.SortMergeMatchIteratorITCase
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