Package cascading.tuple.hadoop.io

Examples of cascading.tuple.hadoop.io.HadoopTupleInputStream

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        decompressor = getDecompressor();
        inputStream = codec.createInputStream( inputStream, decompressor );
        }

      final Decompressor finalDecompressor = decompressor;
      return new HadoopTupleInputStream( inputStream, tupleSerialization.getElementReader() )
      {
      @Override
      public void close() throws IOException
        {
        try
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    super.setConf( conf );

    tupleSerialization = new TupleSerialization( conf );

    // get new readers so deserializers don't compete for the buffer
    lhsStream = new HadoopTupleInputStream( lhsBuffer, tupleSerialization.getElementReader() );
    rhsStream = new HadoopTupleInputStream( rhsBuffer, tupleSerialization.getElementReader() );

    groupComparators = deserializeComparatorsFor( "cascading.group.comparator" );
    groupComparators = delegatingComparatorsFor( groupComparators );
    }
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    }

  @Override
  public int compare( BufferedInputStream lhsStream, BufferedInputStream rhsStream )
    {
    HadoopTupleInputStream lhsInput = new HadoopTupleInputStream( lhsStream, new TupleSerialization().getElementReader() );
    HadoopTupleInputStream rhsInput = new HadoopTupleInputStream( rhsStream, new TupleSerialization().getElementReader() );

    try
      {
      // explicit for debugging purposes
      Long l1 = (Long) lhsInput.readVLong();
      Long l2 = (Long) rhsInput.readVLong();
      return reverse ? l2.compareTo( l1 ) : l1.compareTo( l2 );
      }
    catch( IOException exception )
      {
      throw new CascadingException( exception );
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    dataOutputStream.writeTuple( aTuple );

    dataOutputStream.flush();

    ByteArrayInputStream byteArrayInputStream = new ByteArrayInputStream( byteArrayOutputStream.toByteArray() );
    TupleInputStream dataInputStream = new HadoopTupleInputStream( byteArrayInputStream, new TupleSerialization().getElementReader() );

    Tuple newTuple = new Tuple();

    dataInputStream.readTuple( newTuple );

    assertEquals( aTuple, newTuple );
    }
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    output.close();

    assertEquals( "wrong size", 89967L, file.length() ); // just makes sure the file size doesnt change from expected

    TupleInputStream input = new HadoopTupleInputStream( new FileInputStream( file ), tupleSerialization.getElementReader() );

    int k = -1;
    for( int i = 0; i < 501; i++ )
      {
      Tuple tuple = input.readTuple();
      int value = tuple.getInteger( 0 );
      assertTrue( "wrong diff", value - k == 1 );
      assertTrue( "wrong type", tuple.getObject( 3 ) instanceof TestText );
      assertTrue( "wrong type", tuple.getObject( 4 ) instanceof Tuple );
      assertTrue( "wrong type", tuple.getObject( 5 ) instanceof BytesWritable );

      byte[] bytes = ( (BytesWritable) tuple.getObject( 5 ) ).getBytes();
      String string = new String( bytes, 0, bytes.length > 1 ? bytes.length - 1 : bytes.length, "UTF-8" );
      assertEquals( "wrong value", Integer.parseInt( string ), i );
      assertTrue( "wrong type", tuple.getObject( 6 ) instanceof BooleanWritable );
      k = value;
      }

    input.close();

    System.out.println( "time = " + ( System.currentTimeMillis() - time ) );
    }
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    }

  @Override
  public int compare( BufferedInputStream lhsStream, BufferedInputStream rhsStream )
    {
    HadoopTupleInputStream lhsInput = new HadoopTupleInputStream( lhsStream, new TupleSerialization().getElementReader() );
    HadoopTupleInputStream rhsInput = new HadoopTupleInputStream( rhsStream, new TupleSerialization().getElementReader() );

    try
      {
      // explicit for debugging purposes
      String s1 = (String) lhsInput.readString();
      String s2 = (String) rhsInput.readString();
      return reverse ? s2.compareTo( s1 ) : s1.compareTo( s2 );
      }
    catch( IOException exception )
      {
      throw new CascadingException( exception );
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  public Tuple deserialize(byte[] bytes) throws IOException {
    initDeserializer();
    Tuple tuple = new Tuple();
    ByteArrayInputStream inputStream = new ByteArrayInputStream(bytes);
    TupleInputStream tupleInputStream = new HadoopTupleInputStream(inputStream, serialization.getElementReader());
    tupleDeserializer.open(tupleInputStream);
    tupleDeserializer.deserialize(tuple);
    return tuple;
  }
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Related Classes of cascading.tuple.hadoop.io.HadoopTupleInputStream

  • cascading.platform.hadoop.TestLongComparator
  • cascading.platform.hadoop.TestStringComparator
  • cascading.tuple.hadoop.collect.HadoopSpillableTupleList
  • cascading.tuple.hadoop.HadoopSerializationPlatformTest
  • cascading.tuple.hadoop.TupleTest
  • cascading.tuple.hadoop.util.DeserializerComparator
  • com.liveramp.cascading_ext.TupleSerializationUtil
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