Enhance HBase RPC to support free-ing up server handler threads even if response is not ready
Review Request #1174 - Created July 21, 2011 and updated
Free up RPC server Handler thread if the called routine specifies the call should be delayed. The RPC client sees no difference, changes are server-side only. This is based on the previous submitted patch from Dhruba.
Unit tests run. Also, the patch includes a new unit test.