public void returnCompressor(Compressor compressor) {
      if (compressor != null) {
        if (LOG.isTraceEnabled()) LOG.trace("Returning compressor " + compressor + " to pool.");
        CodecPool.returnCompressor(compressor);
      }
    }
Creates a compression stream without any additional wrapping into buffering streams.
hbase-common/src/main/java/org/apache/hadoop/hbase/io/compress/Compression.java