Package org.apache.hadoop.io.compress

Examples of org.apache.hadoop.io.compress.CompressionOutputStream

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    Class<?> codecClass = Class.forName(codecClassname);
    Configuration conf = new Configuration();
    CompressionCodec codec = (CompressionCodec)
      ReflectionUtils.newInstance(codecClass, conf);
   
    CompressionOutputStream out = codec.createOutputStream(System.out);
    IOUtils.copyBytes(System.in, out, 4096, false);
    out.finish();
  }
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    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,
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    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,
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    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,
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        public void writeTestData(File file, int recordCounts, int columnCount,
                String colSeparator) throws IOException {

            // write random test data
            GzipCodec gzipCodec = new GzipCodec();
            CompressionOutputStream out = gzipCodec
                    .createOutputStream(new FileOutputStream(file));
            BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(
                    out));

            try {

                for (int r = 0; r < recordCounts; r++) {
                    // foreach row write n columns

                    for (int c = 0; c < columnCount; c++) {

                        if (c != 0) {
                            writer.append(colSeparator);
                        }

                        writer.append(String.valueOf(Math.random()));

                    }
                    writer.append("\n");

                }

            } finally {
                writer.close();
                out.close();
            }

        }
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    LOG.debug("Generated " + count + " records");
   
    // Compress data
    DataOutputBuffer compressedDataBuffer = new DataOutputBuffer();
    CompressionOutputStream deflateFilter =
      codec.createOutputStream(compressedDataBuffer);
    DataOutputStream deflateOut =
      new DataOutputStream(new BufferedOutputStream(deflateFilter));
   
    deflateFilter.resetState();
    compressedDataBuffer.reset();
    deflateOut.write(data.getData(), 0, data.getLength());
    deflateOut.flush();
    deflateFilter.finish();
    LOG.debug("Finished compressing data");
   
    // De-compress data
    DataInputBuffer deCompressedDataBuffer = new DataInputBuffer();
    CompressionInputStream inflateFilter =
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  @Override
  public BSPCompressedBundle compressBundle(BSPMessageBundle<M> bundle) {
    BSPCompressedBundle compMsgBundle = null;
    ByteArrayOutputStream bos = null;
    CompressionOutputStream sos = null;
    DataOutputStream dos = null;

    try {
      bos = new ByteArrayOutputStream();
      sos = codec.createOutputStream(bos);
      dos = new DataOutputStream(sos);

      bundle.write(dos);
      dos.close(); // Flush the stream as no more data will be sent.

      byte[] data = bos.toByteArray();
      compMsgBundle = new BSPCompressedBundle(data);

    } catch (IOException ioe) {
      LOG.error("Unable to compress", ioe);
    } finally {
      try {
        sos.close();
        bos.close();
      } catch (IOException e) {
        LOG.warn("Failed to close compression streams.", e);
      }
    }
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   */
  public static class SlowCodec extends GzipCodec {
    @Override
    public CompressionOutputStream createOutputStream(OutputStream out)
        throws IOException {
      CompressionOutputStream ret = super.createOutputStream(out);
      CompressionOutputStream spy = Mockito.spy(ret);
      Mockito.doAnswer(new GenericTestUtils.SleepAnswer(2))
        .when(spy).write(Mockito.<byte[]>any(), Mockito.anyInt(), Mockito.anyInt());
      return spy;
    }
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   */
  public static class SlowCodec extends GzipCodec {
    @Override
    public CompressionOutputStream createOutputStream(OutputStream out)
        throws IOException {
      CompressionOutputStream ret = super.createOutputStream(out);
      CompressionOutputStream spy = Mockito.spy(ret);
      Mockito.doAnswer(new GenericTestUtils.SleepAnswer(2))
        .when(spy).write(Mockito.<byte[]>any(), Mockito.anyInt(), Mockito.anyInt());
      return spy;
    }
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    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,
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