Currently,the data transferring between 2 Result objects in the same process, will cause additional/unnecessary data parsing & copying; as we have to do that via "Writables.copyWritable(result1, result2)", which internally is serialization, data copying, and de-serialization.
The use case are quite common when integrated with Hadoop job running;
The protocol org.apache.hadoop.mapred.RecordReader defined in Hadoop, provides 3 interfaces:
1) K createKey();
2) V createValue();
3) boolean next(K key, V value) throws IOException;
In the 3rd method implementation, most likely requires the value (should be Result object) to be filled, with the Result object from HBase.