ref: 33c378f7b791310e4cb64b53e2bb8f3f3bded105
parent: 24916a652ee5d3e36d931c222df20966f7c158fa
author: sijchen <sijchen@cisco.com>
date: Tue Nov 10 04:50:06 EST 2015
change API for slicing part for easier usage (the UseLoadBalancing flag is still under working)