/**
* Start the slider RPC server
*/
private void startSliderRPCServer() throws IOException {
SliderClusterProtocolPBImpl protobufRelay = new SliderClusterProtocolPBImpl(this);
BlockingService blockingService = SliderClusterAPI.SliderClusterProtocolPB
.newReflectiveBlockingService(
protobufRelay);
rpcService = new WorkflowRpcService("SliderRPC", RpcBinder.createProtobufServer(