diff --git a/weed/mq/broker/broker_grpc_sub_coordinator.go b/weed/mq/broker/broker_grpc_sub_coordinator.go
index 3fd97f1c2..6925baa9e 100644
--- a/weed/mq/broker/broker_grpc_sub_coordinator.go
+++ b/weed/mq/broker/broker_grpc_sub_coordinator.go
@@ -24,13 +24,13 @@ func (b *MessageQueueBroker) SubscriberToSubCoordinator(stream mq_pb.SeaweedMess
 	// process init message
 	initMessage := req.GetInit()
 	if initMessage != nil {
-		cgi = b.Coordinator.AddSubscriber(initMessage.ConsumerGroup, initMessage.ConsumerGroupInstanceId, initMessage.Topic)
+		cgi = b.Coordinator.AddSubscriber(initMessage)
 		glog.V(0).Infof("subscriber %s/%s/%s connected", initMessage.ConsumerGroup, initMessage.ConsumerGroupInstanceId, initMessage.Topic)
 	} else {
 		return status.Errorf(codes.InvalidArgument, "subscriber init message is empty")
 	}
 	defer func() {
-		b.Coordinator.RemoveSubscriber(initMessage.ConsumerGroup, initMessage.ConsumerGroupInstanceId, initMessage.Topic)
+		b.Coordinator.RemoveSubscriber(initMessage)
 		glog.V(0).Infof("subscriber %s/%s/%s disconnected: %v", initMessage.ConsumerGroup, initMessage.ConsumerGroupInstanceId, initMessage.Topic, err)
 	}()
 
diff --git a/weed/mq/sub_coordinator/coordinator.go b/weed/mq/sub_coordinator/coordinator.go
index bb50991ab..d128310d1 100644
--- a/weed/mq/sub_coordinator/coordinator.go
+++ b/weed/mq/sub_coordinator/coordinator.go
@@ -51,42 +51,42 @@ func toTopicName(topic *mq_pb.Topic) string {
 	return topicName
 }
 
-func (c *Coordinator) AddSubscriber(consumerGroup, consumerGroupInstance string, topic *mq_pb.Topic) *ConsumerGroupInstance {
-	tcg := c.GetTopicConsumerGroups(topic, true)
-	cg, _ := tcg.ConsumerGroups.Get(consumerGroup)
+func (c *Coordinator) AddSubscriber(initMessage *mq_pb.SubscriberToSubCoordinatorRequest_InitMessage) *ConsumerGroupInstance {
+	tcg := c.GetTopicConsumerGroups(initMessage.Topic, true)
+	cg, _ := tcg.ConsumerGroups.Get(initMessage.ConsumerGroup)
 	if cg == nil {
-		cg = NewConsumerGroup(topic, c.balancer)
-		if !tcg.ConsumerGroups.SetIfAbsent(consumerGroup, cg) {
-			cg, _ = tcg.ConsumerGroups.Get(consumerGroup)
+		cg = NewConsumerGroup(initMessage.Topic, c.balancer)
+		if !tcg.ConsumerGroups.SetIfAbsent(initMessage.ConsumerGroup, cg) {
+			cg, _ = tcg.ConsumerGroups.Get(initMessage.ConsumerGroup)
 		}
 	}
-	cgi, _ := cg.ConsumerGroupInstances.Get(consumerGroupInstance)
+	cgi, _ := cg.ConsumerGroupInstances.Get(initMessage.ConsumerGroupInstanceId)
 	if cgi == nil {
-		cgi = NewConsumerGroupInstance(consumerGroupInstance)
-		if !cg.ConsumerGroupInstances.SetIfAbsent(consumerGroupInstance, cgi) {
-			cgi, _ = cg.ConsumerGroupInstances.Get(consumerGroupInstance)
+		cgi = NewConsumerGroupInstance(initMessage.ConsumerGroupInstanceId)
+		if !cg.ConsumerGroupInstances.SetIfAbsent(initMessage.ConsumerGroupInstanceId, cgi) {
+			cgi, _ = cg.ConsumerGroupInstances.Get(initMessage.ConsumerGroupInstanceId)
 		}
 	}
-	cg.OnAddConsumerGroupInstance(consumerGroupInstance, topic)
+	cg.OnAddConsumerGroupInstance(initMessage.ConsumerGroupInstanceId, initMessage.Topic)
 	return cgi
 }
 
-func (c *Coordinator) RemoveSubscriber(consumerGroup, consumerGroupInstance string, topic *mq_pb.Topic) {
-	tcg := c.GetTopicConsumerGroups(topic, false)
+func (c *Coordinator) RemoveSubscriber(initMessage *mq_pb.SubscriberToSubCoordinatorRequest_InitMessage) {
+	tcg := c.GetTopicConsumerGroups(initMessage.Topic, false)
 	if tcg == nil {
 		return
 	}
-	cg, _ := tcg.ConsumerGroups.Get(consumerGroup)
+	cg, _ := tcg.ConsumerGroups.Get(initMessage.ConsumerGroup)
 	if cg == nil {
 		return
 	}
-	cg.ConsumerGroupInstances.Remove(consumerGroupInstance)
-	cg.OnRemoveConsumerGroupInstance(consumerGroupInstance, topic)
+	cg.ConsumerGroupInstances.Remove(initMessage.ConsumerGroupInstanceId)
+	cg.OnRemoveConsumerGroupInstance(initMessage.ConsumerGroupInstanceId, initMessage.Topic)
 	if cg.ConsumerGroupInstances.Count() == 0 {
-		tcg.ConsumerGroups.Remove(consumerGroup)
+		tcg.ConsumerGroups.Remove(initMessage.ConsumerGroup)
 	}
 	if tcg.ConsumerGroups.Count() == 0 {
-		c.RemoveTopic(topic)
+		c.RemoveTopic(initMessage.Topic)
 	}
 }