diff --git a/main.go b/main.go
index 7322eab..2a8352c 100644
--- a/main.go
+++ b/main.go
@@ -111,35 +111,4 @@ func StartNode(replicaID uint64, exampleShardID uint64, addr string) *dragonboat
 
 	return nh
 
-	// raftStopper.RunWorker(func() {
-	// 	// use a NO-OP client session here
-	// 	// check the example in godoc to see how to use a regular client session
-	// 	cs := nh.GetNoOPSession(exampleShardID)
-	// 	for {
-	// 		select {
-	// 		case v, ok := <-ch:
-	// 			if !ok {
-	// 				return
-	// 			}
-	// 			// remove the \n char
-	// 			msg := strings.Replace(v, "\n", "", 1)
-	// 			if cmd, addr, replicaID, err := splitMembershipChangeCmd(msg); err == nil {
-	// 				// input is a membership change request
-	// 				makeMembershipChange(nh, cmd, addr, replicaID)
-	// 			} else {
-	// 				// input is a regular message need to be proposed
-	// 				ctx, cancel := context.WithTimeout(context.Background(), 3*time.Second)
-	// 				// make a proposal to update the IStateMachine instance
-	// 				_, err := nh.SyncPropose(ctx, cs, []byte(msg))
-	// 				cancel()
-	// 				if err != nil {
-	// 					fmt.Fprintf(os.Stderr, "SyncPropose returned error %v\n", err)
-	// 				}
-	// 			}
-	// 		case <-raftStopper.ShouldStop():
-	// 			return
-	// 		}
-	// 	}
-	// })
-	// raftStopper.Wait()
 }