diff --git a/weed/mq/client/pub_client/publisher.go b/weed/mq/client/pub_client/publisher.go
index be29efa1c..5a134b3c2 100644
--- a/weed/mq/client/pub_client/publisher.go
+++ b/weed/mq/client/pub_client/publisher.go
@@ -24,7 +24,6 @@ type PublishClient struct {
 type TopicPublisher struct {
 	namespace        string
 	topic            string
-	partition2Broker *interval.SearchTree[*PublishClient, int32]
 	partition2Buffer *interval.SearchTree[*buffered_queue.BufferedQueue[*mq_pb.DataMessage], int32]
 	grpcDialOption   grpc.DialOption
 	sync.Mutex       // protects grpc
@@ -36,9 +35,6 @@ func NewTopicPublisher(namespace, topic string, config *PublisherConfiguration)
 	return &TopicPublisher{
 		namespace: namespace,
 		topic:     topic,
-		partition2Broker: interval.NewSearchTree[*PublishClient](func(a, b int32) int {
-			return int(a - b)
-		}),
 		partition2Buffer: interval.NewSearchTree[*buffered_queue.BufferedQueue[*mq_pb.DataMessage]](func(a, b int32) int {
 			return int(a - b)
 		}),
@@ -49,11 +45,6 @@ func NewTopicPublisher(namespace, topic string, config *PublisherConfiguration)
 
 func (p *TopicPublisher) Shutdown() error {
 
-	if clients, found := p.partition2Broker.AllIntersections(0, pub_balancer.MaxPartitionCount); found {
-		for _, client := range clients {
-			client.CloseSend()
-		}
-	}
 	if inputBuffers, found := p.partition2Buffer.AllIntersections(0, pub_balancer.MaxPartitionCount); found {
 		for _, inputBuffer := range inputBuffers {
 			inputBuffer.CloseInput()