Package org.apache.hadoop.io

Examples of org.apache.hadoop.io.RandomDatum

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    // Generate data
    DataOutputBuffer data = new DataOutputBuffer();
    RandomDatum.Generator generator = new RandomDatum.Generator(seed);
    for(int i=0; i < count; ++i) {
      generator.next();
      RandomDatum key = generator.getKey();
      RandomDatum value = generator.getValue();
     
      key.write(data);
      value.write(data);
    }

    LOG.info("Generated " + count + " records");
   
    // Compress data
    DataOutputBuffer compressedDataBuffer = new DataOutputBuffer();
    CompressionOutputStream deflateFilter =
      codec.createOutputStream(compressedDataBuffer);
    DataOutputStream deflateOut =
      new DataOutputStream(new BufferedOutputStream(deflateFilter));
    deflateOut.write(data.getData(), 0, data.getLength());
    deflateOut.flush();
    deflateFilter.finish();
    LOG.info("Finished compressing data");
   
    // De-compress data
    DataInputBuffer deCompressedDataBuffer = new DataInputBuffer();
    deCompressedDataBuffer.reset(compressedDataBuffer.getData(), 0,
                                 compressedDataBuffer.getLength());
    CompressionInputStream inflateFilter =
      codec.createInputStream(deCompressedDataBuffer);
    DataInputStream inflateIn =
      new DataInputStream(new BufferedInputStream(inflateFilter));

    // Check
    DataInputBuffer originalData = new DataInputBuffer();
    originalData.reset(data.getData(), 0, data.getLength());
    DataInputStream originalIn = new DataInputStream(new BufferedInputStream(originalData));  
    for(int i=0; i < count; ++i) {
      RandomDatum k1 = new RandomDatum();
      RandomDatum v1 = new RandomDatum();
      k1.readFields(originalIn);
      v1.readFields(originalIn);
     
      RandomDatum k2 = new RandomDatum();
      RandomDatum v2 = new RandomDatum();
      k2.readFields(inflateIn);
      v2.readFields(inflateIn);
      assertTrue("original and compressed-then-decompressed-output not equal",
                 k1.equals(k2) && v1.equals(v2));
    }

    // De-compress data byte-at-a-time
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    // Generate data
    DataOutputBuffer data = new DataOutputBuffer();
    RandomDatum.Generator generator = new RandomDatum.Generator(seed);
    for (int i = 0; i < count; ++i) {
      generator.next();
      RandomDatum key = generator.getKey();
      RandomDatum value = generator.getValue();

      key.write(data);
      value.write(data);
    }
    LOG.info("Generated " + count + " records");

    // Compress data
    DataOutputBuffer compressedDataBuffer = new DataOutputBuffer();
    DataOutputStream deflateOut = new DataOutputStream(
        new BufferedOutputStream(compressedDataBuffer));
    CompressionOutputStream deflateFilter = codec
        .createOutputStream(deflateOut);
    deflateFilter.write(data.getData(), 0, data.getLength());
    deflateFilter.finish();
    deflateFilter.flush();
    LOG.info("Finished compressing data");

    // reset deflator
    deflateFilter.resetState();
    LOG.info("Finished reseting deflator");

    // re-generate data
    data.reset();
    generator = new RandomDatum.Generator(seed);
    for (int i = 0; i < count; ++i) {
      generator.next();
      RandomDatum key = generator.getKey();
      RandomDatum value = generator.getValue();

      key.write(data);
      value.write(data);
    }
    DataInputBuffer originalData = new DataInputBuffer();
    DataInputStream originalIn = new DataInputStream(
        new BufferedInputStream(originalData));
    originalData.reset(data.getData(), 0, data.getLength());

    // re-compress data
    compressedDataBuffer.reset();
    deflateOut = new DataOutputStream(new BufferedOutputStream(
        compressedDataBuffer));
    deflateFilter = codec.createOutputStream(deflateOut);

    deflateFilter.write(data.getData(), 0, data.getLength());
    deflateFilter.finish();
    deflateFilter.flush();
    LOG.info("Finished re-compressing data");

    // De-compress data
    DataInputBuffer deCompressedDataBuffer = new DataInputBuffer();
    deCompressedDataBuffer.reset(compressedDataBuffer.getData(), 0,
        compressedDataBuffer.getLength());
    CompressionInputStream inflateFilter = codec
        .createInputStream(deCompressedDataBuffer);
    DataInputStream inflateIn = new DataInputStream(
        new BufferedInputStream(inflateFilter));

    // Check
    for (int i = 0; i < count; ++i) {
      RandomDatum k1 = new RandomDatum();
      RandomDatum v1 = new RandomDatum();
      k1.readFields(originalIn);
      v1.readFields(originalIn);

      RandomDatum k2 = new RandomDatum();
      RandomDatum v2 = new RandomDatum();
      k2.readFields(inflateIn);
      v2.readFields(inflateIn);
      assertTrue(
          "original and compressed-then-decompressed-output not equal",
          k1.equals(k2) && v1.equals(v2));
    }
    LOG.info("SUCCESS! Completed checking " + count + " records");
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    // Generate data
    DataOutputBuffer data = new DataOutputBuffer();
    RandomDatum.Generator generator = new RandomDatum.Generator(seed);
    for(int i=0; i < count; ++i) {
      generator.next();
      RandomDatum key = generator.getKey();
      RandomDatum value = generator.getValue();
     
      key.write(data);
      value.write(data);
    }
    DataInputBuffer originalData = new DataInputBuffer();
    DataInputStream originalIn = new DataInputStream(new BufferedInputStream(originalData));
    originalData.reset(data.getData(), 0, data.getLength());
   
    LOG.info("Generated " + count + " records");
   
    // Compress data
    DataOutputBuffer compressedDataBuffer = new DataOutputBuffer();
    CompressionOutputStream deflateFilter =
      codec.createOutputStream(compressedDataBuffer);
    DataOutputStream deflateOut =
      new DataOutputStream(new BufferedOutputStream(deflateFilter));
    deflateOut.write(data.getData(), 0, data.getLength());
    deflateOut.flush();
    deflateFilter.finish();
    LOG.info("Finished compressing data");
   
    // De-compress data
    DataInputBuffer deCompressedDataBuffer = new DataInputBuffer();
    deCompressedDataBuffer.reset(compressedDataBuffer.getData(), 0,
                                 compressedDataBuffer.getLength());
    CompressionInputStream inflateFilter =
      codec.createInputStream(deCompressedDataBuffer);
    DataInputStream inflateIn =
      new DataInputStream(new BufferedInputStream(inflateFilter));

    // Check
    for(int i=0; i < count; ++i) {
      RandomDatum k1 = new RandomDatum();
      RandomDatum v1 = new RandomDatum();
      k1.readFields(originalIn);
      v1.readFields(originalIn);
     
      RandomDatum k2 = new RandomDatum();
      RandomDatum v2 = new RandomDatum();
      k2.readFields(inflateIn);
      v2.readFields(inflateIn);
      assertTrue("original and compressed-then-decompressed-output not equal",
                 k1.equals(k2) && v1.equals(v2));
    }
    LOG.info("SUCCESS! Completed checking " + count + " records");
  }
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    // Generate data
    DataOutputBuffer data = new DataOutputBuffer();
    RandomDatum.Generator generator = new RandomDatum.Generator(seed);
    for(int i=0; i < count; ++i) {
      generator.next();
      RandomDatum key = generator.getKey();
      RandomDatum value = generator.getValue();
     
      key.write(data);
      value.write(data);
    }
    DataInputBuffer originalData = new DataInputBuffer();
    DataInputStream originalIn = new DataInputStream(new BufferedInputStream(originalData));
    originalData.reset(data.getData(), 0, data.getLength());
   
    LOG.info("Generated " + count + " records");
   
    // Compress data
    DataOutputBuffer compressedDataBuffer = new DataOutputBuffer();
    CompressionOutputStream deflateFilter =
      codec.createOutputStream(compressedDataBuffer);
    DataOutputStream deflateOut =
      new DataOutputStream(new BufferedOutputStream(deflateFilter));
    deflateOut.write(data.getData(), 0, data.getLength());
    deflateOut.flush();
    deflateFilter.finish();
    LOG.info("Finished compressing data");
   
    // De-compress data
    DataInputBuffer deCompressedDataBuffer = new DataInputBuffer();
    deCompressedDataBuffer.reset(compressedDataBuffer.getData(), 0,
                                 compressedDataBuffer.getLength());
    CompressionInputStream inflateFilter =
      codec.createInputStream(deCompressedDataBuffer);
    DataInputStream inflateIn =
      new DataInputStream(new BufferedInputStream(inflateFilter));

    // Check
    for(int i=0; i < count; ++i) {
      RandomDatum k1 = new RandomDatum();
      RandomDatum v1 = new RandomDatum();
      k1.readFields(originalIn);
      v1.readFields(originalIn);
     
      RandomDatum k2 = new RandomDatum();
      RandomDatum v2 = new RandomDatum();
      k2.readFields(inflateIn);
      v2.readFields(inflateIn);
    }
    LOG.info("SUCCESS! Completed checking " + count + " records");
  }
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    // Generate data
    DataOutputBuffer data = new DataOutputBuffer();
    RandomDatum.Generator generator = new RandomDatum.Generator(seed);
    for(int i=0; i < count; ++i) {
      generator.next();
      RandomDatum key = generator.getKey();
      RandomDatum value = generator.getValue();
     
      key.write(data);
      value.write(data);
    }
    LOG.info("Generated " + count + " records");
   
    // Compress data
    DataOutputBuffer compressedDataBuffer = new DataOutputBuffer();
    CompressionOutputStream deflateFilter =
      codec.createOutputStream(compressedDataBuffer);
    DataOutputStream deflateOut =
      new DataOutputStream(new BufferedOutputStream(deflateFilter));
    deflateOut.write(data.getData(), 0, data.getLength());
    deflateOut.flush();
    deflateFilter.finish();
    LOG.info("Finished compressing data");
   
    // De-compress data
    DataInputBuffer deCompressedDataBuffer = new DataInputBuffer();
    deCompressedDataBuffer.reset(compressedDataBuffer.getData(), 0,
                                 compressedDataBuffer.getLength());
    CompressionInputStream inflateFilter =
      codec.createInputStream(deCompressedDataBuffer);
    DataInputStream inflateIn =
      new DataInputStream(new BufferedInputStream(inflateFilter));

    // Check
    DataInputBuffer originalData = new DataInputBuffer();
    originalData.reset(data.getData(), 0, data.getLength());
    DataInputStream originalIn = new DataInputStream(new BufferedInputStream(originalData));
    for(int i=0; i < count; ++i) {
      RandomDatum k1 = new RandomDatum();
      RandomDatum v1 = new RandomDatum();
      k1.readFields(originalIn);
      v1.readFields(originalIn);
     
      RandomDatum k2 = new RandomDatum();
      RandomDatum v2 = new RandomDatum();
      k2.readFields(inflateIn);
      v2.readFields(inflateIn);
      assertTrue("original and compressed-then-decompressed-output not equal",
                 k1.equals(k2) && v1.equals(v2));
    }

    // De-compress data byte-at-a-time
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    // Generate data
    DataOutputBuffer data = new DataOutputBuffer();
    RandomDatum.Generator generator = new RandomDatum.Generator(seed);
    for(int i=0; i < count; ++i) {
      generator.next();
      RandomDatum key = generator.getKey();
      RandomDatum value = generator.getValue();
     
      key.write(data);
      value.write(data);
    }
    DataInputBuffer originalData = new DataInputBuffer();
    DataInputStream originalIn = new DataInputStream(new BufferedInputStream(originalData));
    originalData.reset(data.getData(), 0, data.getLength());
   
    LOG.info("Generated " + count + " records");
   
    // Compress data
    DataOutputBuffer compressedDataBuffer = new DataOutputBuffer();
    CompressionOutputStream deflateFilter =
      codec.createOutputStream(compressedDataBuffer);
    DataOutputStream deflateOut =
      new DataOutputStream(new BufferedOutputStream(deflateFilter));
    deflateOut.write(data.getData(), 0, data.getLength());
    deflateOut.flush();
    deflateFilter.finish();
    LOG.info("Finished compressing data");
   
    // De-compress data
    DataInputBuffer deCompressedDataBuffer = new DataInputBuffer();
    deCompressedDataBuffer.reset(compressedDataBuffer.getData(), 0,
                                 compressedDataBuffer.getLength());
    CompressionInputStream inflateFilter =
      codec.createInputStream(deCompressedDataBuffer);
    DataInputStream inflateIn =
      new DataInputStream(new BufferedInputStream(inflateFilter));

    // Check
    for(int i=0; i < count; ++i) {
      RandomDatum k1 = new RandomDatum();
      RandomDatum v1 = new RandomDatum();
      k1.readFields(originalIn);
      v1.readFields(originalIn);
     
      RandomDatum k2 = new RandomDatum();
      RandomDatum v2 = new RandomDatum();
      k2.readFields(inflateIn);
      v2.readFields(inflateIn);
    }
    LOG.info("SUCCESS! Completed checking " + count + " records");
  }
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    // Generate data
    DataOutputBuffer data = new DataOutputBuffer();
    RandomDatum.Generator generator = new RandomDatum.Generator(seed);
    for(int i=0; i < count; ++i) {
      generator.next();
      RandomDatum key = generator.getKey();
      RandomDatum value = generator.getValue();
     
      key.write(data);
      value.write(data);
    }
    LOG.info("Generated " + count + " records");
   
    // Compress data
    DataOutputBuffer compressedDataBuffer = new DataOutputBuffer();
    CompressionOutputStream deflateFilter =
      codec.createOutputStream(compressedDataBuffer);
    DataOutputStream deflateOut =
      new DataOutputStream(new BufferedOutputStream(deflateFilter));
    deflateOut.write(data.getData(), 0, data.getLength());
    deflateOut.flush();
    deflateFilter.finish();
    LOG.info("Finished compressing data");
   
    // De-compress data
    DataInputBuffer deCompressedDataBuffer = new DataInputBuffer();
    deCompressedDataBuffer.reset(compressedDataBuffer.getData(), 0,
                                 compressedDataBuffer.getLength());
    CompressionInputStream inflateFilter =
      codec.createInputStream(deCompressedDataBuffer);
    DataInputStream inflateIn =
      new DataInputStream(new BufferedInputStream(inflateFilter));

    // Check
    DataInputBuffer originalData = new DataInputBuffer();
    originalData.reset(data.getData(), 0, data.getLength());
    DataInputStream originalIn = new DataInputStream(new BufferedInputStream(originalData));
    for(int i=0; i < count; ++i) {
      RandomDatum k1 = new RandomDatum();
      RandomDatum v1 = new RandomDatum();
      k1.readFields(originalIn);
      v1.readFields(originalIn);
     
      RandomDatum k2 = new RandomDatum();
      RandomDatum v2 = new RandomDatum();
      k2.readFields(inflateIn);
      v2.readFields(inflateIn);
      assertTrue("original and compressed-then-decompressed-output not equal",
                 k1.equals(k2) && v1.equals(v2));
    }

    // De-compress data byte-at-a-time
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    // Generate data
    DataOutputBuffer data = new DataOutputBuffer();
    RandomDatum.Generator generator = new RandomDatum.Generator(seed);
    for(int i=0; i < count; ++i) {
      generator.next();
      RandomDatum key = generator.getKey();
      RandomDatum value = generator.getValue();
     
      key.write(data);
      value.write(data);
    }
    LOG.info("Generated " + count + " records");
   
    // Compress data
    DataOutputBuffer compressedDataBuffer = new DataOutputBuffer();
    CompressionOutputStream deflateFilter =
      codec.createOutputStream(compressedDataBuffer);
    DataOutputStream deflateOut =
      new DataOutputStream(new BufferedOutputStream(deflateFilter));
    deflateOut.write(data.getData(), 0, data.getLength());
    deflateOut.flush();
    deflateFilter.finish();
    LOG.info("Finished compressing data");
   
    // De-compress data
    DataInputBuffer deCompressedDataBuffer = new DataInputBuffer();
    deCompressedDataBuffer.reset(compressedDataBuffer.getData(), 0,
                                 compressedDataBuffer.getLength());
    CompressionInputStream inflateFilter =
      codec.createInputStream(deCompressedDataBuffer);
    DataInputStream inflateIn =
      new DataInputStream(new BufferedInputStream(inflateFilter));

    // Check
    DataInputBuffer originalData = new DataInputBuffer();
    originalData.reset(data.getData(), 0, data.getLength());
    DataInputStream originalIn = new DataInputStream(new BufferedInputStream(originalData));
    for(int i=0; i < count; ++i) {
      RandomDatum k1 = new RandomDatum();
      RandomDatum v1 = new RandomDatum();
      k1.readFields(originalIn);
      v1.readFields(originalIn);
     
      RandomDatum k2 = new RandomDatum();
      RandomDatum v2 = new RandomDatum();
      k2.readFields(inflateIn);
      v2.readFields(inflateIn);
      assertTrue("original and compressed-then-decompressed-output not equal",
                 k1.equals(k2) && v1.equals(v2));
    }

    // De-compress data byte-at-a-time
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    // Generate data
    DataOutputBuffer data = new DataOutputBuffer();
    RandomDatum.Generator generator = new RandomDatum.Generator(seed);
    for(int i=0; i < count; ++i) {
      generator.next();
      RandomDatum key = generator.getKey();
      RandomDatum value = generator.getValue();
     
      key.write(data);
      value.write(data);
    }
    DataInputBuffer originalData = new DataInputBuffer();
    DataInputStream originalIn = new DataInputStream(new BufferedInputStream(originalData));
    originalData.reset(data.getData(), 0, data.getLength());
   
    LOG.info("Generated " + count + " records");
   
    // Compress data
    DataOutputBuffer compressedDataBuffer = new DataOutputBuffer();
    CompressionOutputStream deflateFilter =
      codec.createOutputStream(compressedDataBuffer);
    DataOutputStream deflateOut =
      new DataOutputStream(new BufferedOutputStream(deflateFilter));
    deflateOut.write(data.getData(), 0, data.getLength());
    deflateOut.flush();
    deflateFilter.finish();
    LOG.info("Finished compressing data");
   
    // De-compress data
    DataInputBuffer deCompressedDataBuffer = new DataInputBuffer();
    deCompressedDataBuffer.reset(compressedDataBuffer.getData(), 0,
                                 compressedDataBuffer.getLength());
    CompressionInputStream inflateFilter =
      codec.createInputStream(deCompressedDataBuffer);
    DataInputStream inflateIn =
      new DataInputStream(new BufferedInputStream(inflateFilter));

    // Check
    for(int i=0; i < count; ++i) {
      RandomDatum k1 = new RandomDatum();
      RandomDatum v1 = new RandomDatum();
      k1.readFields(originalIn);
      v1.readFields(originalIn);
     
      RandomDatum k2 = new RandomDatum();
      RandomDatum v2 = new RandomDatum();
      k2.readFields(inflateIn);
      v2.readFields(inflateIn);
    }
    LOG.info("SUCCESS! Completed checking " + count + " records");
  }
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