@Override
  public CompressionInputStream createInputStream(InputStream in, Decompressor d)
    throws IOException {
    return new BlockDecompressorStream(in, d, bufferSize);
  }
Return true if the native shared libraries were loaded; false otherwise.
hbase-compression/hbase-compression-snappy/src/main/java/org/apache/hadoop/hbase/io/compress/xerial/SnappyCodec.java