TestTFileSeqFileComparison.java 文件源码

public SeqFileAppendable(FileSystem fs, Path path, int osBufferSize,
    String compress, int minBlkSize) throws IOException {
  Configuration conf = new Configuration();

  CompressionCodec codec = null;
  if ("lzo".equals(compress)) {
    codec = Compression.Algorithm.LZO.getCodec();
  }
  else if ("gz".equals(compress)) {
    codec = Compression.Algorithm.GZ.getCodec();
  }
  else if (!"none".equals(compress))
    throw new IOException("Codec not supported.");

  this.fsdos = fs.create(path, true, osBufferSize);

  if (!"none".equals(compress)) {
    writer =
        SequenceFile.createWriter(conf, fsdos, BytesWritable.class,
            BytesWritable.class, SequenceFile.CompressionType.BLOCK, codec);
  }
  else {
    writer =
        SequenceFile.createWriter(conf, fsdos, BytesWritable.class,
            BytesWritable.class, SequenceFile.CompressionType.NONE, null);
  }
}