presto-rcfile/src/main/java/io/prestosql/rcfile/HadoopCodecFactory.java/HadoopCodecFactory/createDecompressor
class HadoopCodecFactory:    @Override
    public RcFileDecompressor createDecompressor(String codecName)
    {
        CompressionCodec codec = createCompressionCodec(codecName);
        return new HadoopDecompressor(codec);
    }