diff --git a/internal/masterservice/master_service_test.go b/internal/masterservice/master_service_test.go
index c04fce54b8..d6e2cfd298 100644
--- a/internal/masterservice/master_service_test.go
+++ b/internal/masterservice/master_service_test.go
@@ -243,15 +243,12 @@ func TestMasterService(t *testing.T) {
 	ctx, cancel := context.WithCancel(context.Background())
 	defer cancel()
 
-	msFactory := msgstream.NewPmsFactory()
+	coreFactory := msgstream.NewPmsFactory()
 	Params.Init()
-	core, err := NewCore(ctx, msFactory)
+	core, err := NewCore(ctx, coreFactory)
 	assert.Nil(t, err)
 	randVal := rand.Int()
 
-	err = core.Register()
-	assert.Nil(t, err)
-
 	Params.TimeTickChannel = fmt.Sprintf("master-time-tick-%d", randVal)
 	Params.DdChannel = fmt.Sprintf("master-dd-%d", randVal)
 	Params.StatisticsChannel = fmt.Sprintf("master-statistics-%d", randVal)
@@ -259,6 +256,9 @@ func TestMasterService(t *testing.T) {
 	Params.KvRootPath = fmt.Sprintf("/%d/%s", randVal, Params.KvRootPath)
 	Params.MsgChannelSubName = fmt.Sprintf("subname-%d", randVal)
 
+	err = core.Register()
+	assert.Nil(t, err)
+
 	etcdCli, err := clientv3.New(clientv3.Config{Endpoints: []string{Params.EtcdAddress}, DialTimeout: 5 * time.Second})
 	assert.Nil(t, err)
 	sessKey := path.Join(Params.MetaRootPath, sessionutil.DefaultServiceRoot)
@@ -306,6 +306,43 @@ func TestMasterService(t *testing.T) {
 	err = core.SetQueryService(qm)
 	assert.Nil(t, err)
 
+	tmpFactory := msgstream.NewPmsFactory()
+
+	m := map[string]interface{}{
+		"pulsarAddress":  Params.PulsarAddress,
+		"receiveBufSize": 1024,
+		"pulsarBufSize":  1024}
+	err = tmpFactory.SetParams(m)
+	assert.Nil(t, err)
+
+	dataServiceSegmentStream, _ := tmpFactory.NewMsgStream(ctx)
+	dataServiceSegmentStream.AsProducer([]string{Params.DataServiceSegmentChannel})
+
+	timeTickStream, _ := tmpFactory.NewMsgStream(ctx)
+	timeTickStream.AsConsumer([]string{Params.TimeTickChannel}, Params.MsgChannelSubName)
+	timeTickStream.Start()
+
+	ddStream, _ := tmpFactory.NewMsgStream(ctx)
+	ddStream.AsConsumer([]string{Params.DdChannel}, Params.MsgChannelSubName)
+	ddStream.Start()
+
+	// test dataServiceSegmentStream seek
+	dataNodeSubName := Params.MsgChannelSubName + "dn"
+	flushedSegStream, _ := tmpFactory.NewMsgStream(ctx)
+	flushedSegStream.AsConsumer([]string{Params.DataServiceSegmentChannel}, dataNodeSubName)
+	flushedSegStream.Start()
+	msgPack := GenFlushedSegMsgPack(9999)
+	err = dataServiceSegmentStream.Produce(msgPack)
+	assert.Nil(t, err)
+
+	flushedSegMsgPack := flushedSegStream.Consume()
+	flushedSegStream.Close()
+
+	flushedSegPosStr, _ := EncodeMsgPositions(flushedSegMsgPack.EndPositions)
+
+	_, err = etcdCli.Put(ctx, path.Join(Params.MetaRootPath, FlushedSegMsgEndPosPrefix), flushedSegPosStr)
+	assert.Nil(t, err)
+
 	err = core.Init()
 	assert.Nil(t, err)
 
@@ -321,43 +358,6 @@ func TestMasterService(t *testing.T) {
 	err = core.Start()
 	assert.Nil(t, err)
 
-	m := map[string]interface{}{
-		"pulsarAddress":  Params.PulsarAddress,
-		"receiveBufSize": 1024,
-		"pulsarBufSize":  1024}
-	err = msFactory.SetParams(m)
-	assert.Nil(t, err)
-
-	dataServiceSegmentStream, _ := msFactory.NewMsgStream(ctx)
-	dataServiceSegmentStream.AsProducer([]string{Params.DataServiceSegmentChannel})
-
-	timeTickStream, _ := msFactory.NewMsgStream(ctx)
-	timeTickStream.AsConsumer([]string{Params.TimeTickChannel}, Params.MsgChannelSubName)
-	timeTickStream.Start()
-
-	ddStream, _ := msFactory.NewMsgStream(ctx)
-	ddStream.AsConsumer([]string{Params.DdChannel}, Params.MsgChannelSubName)
-	ddStream.Start()
-
-	// test dataServiceSegmentStream seek
-	dataNodeSubName := Params.MsgChannelSubName + "dn"
-	flushedSegStream, _ := msFactory.NewMsgStream(ctx)
-	flushedSegStream.AsConsumer([]string{Params.DataServiceSegmentChannel}, dataNodeSubName)
-	flushedSegStream.Start()
-	msgPack := GenFlushedSegMsgPack(9999)
-	err = dataServiceSegmentStream.Produce(msgPack)
-	assert.Nil(t, err)
-	flushedSegMsgPack := flushedSegStream.Consume()
-	flushedSegPosStr, _ := EncodeMsgPositions(flushedSegMsgPack.EndPositions)
-	_, err = etcdCli.Put(ctx, path.Join(Params.MetaRootPath, FlushedSegMsgEndPosPrefix), flushedSegPosStr)
-	assert.Nil(t, err)
-
-	err = core.Init()
-	assert.Nil(t, err)
-
-	err = core.Start()
-	assert.Nil(t, err)
-
 	time.Sleep(time.Second)
 
 	getNotTtMsg := func(n int, ch <-chan *msgstream.MsgPack) []msgstream.TsMsg {
@@ -1733,9 +1733,6 @@ func TestMasterService2(t *testing.T) {
 	assert.Nil(t, err)
 	randVal := rand.Int()
 
-	err = core.Register()
-	assert.Nil(t, err)
-
 	Params.TimeTickChannel = fmt.Sprintf("master-time-tick-%d", randVal)
 	Params.DdChannel = fmt.Sprintf("master-dd-%d", randVal)
 	Params.StatisticsChannel = fmt.Sprintf("master-statistics-%d", randVal)
@@ -1743,6 +1740,9 @@ func TestMasterService2(t *testing.T) {
 	Params.KvRootPath = fmt.Sprintf("/%d/%s", randVal, Params.KvRootPath)
 	Params.MsgChannelSubName = fmt.Sprintf("subname-%d", randVal)
 
+	err = core.Register()
+	assert.Nil(t, err)
+
 	dm := &dataMock{randVal: randVal}
 	err = core.SetDataService(ctx, dm)
 	assert.Nil(t, err)
diff --git a/internal/util/mqclient/pulsar_client.go b/internal/util/mqclient/pulsar_client.go
index 0e9234c62d..bed6e112c1 100644
--- a/internal/util/mqclient/pulsar_client.go
+++ b/internal/util/mqclient/pulsar_client.go
@@ -58,7 +58,7 @@ func (pc *pulsarClient) Subscribe(options ConsumerOptions) (Consumer, error) {
 	if err != nil {
 		return nil, err
 	}
-	msgChannel := make(chan ConsumerMessage, 1)
+	msgChannel := make(chan ConsumerMessage)
 	pConsumer := &pulsarConsumer{c: consumer, msgChannel: msgChannel}
 
 	go func() {
@@ -67,6 +67,7 @@ func (pc *pulsarClient) Subscribe(options ConsumerOptions) (Consumer, error) {
 			case msg, ok := <-pConsumer.c.Chan():
 				if !ok {
 					close(msgChannel)
+					log.Debug("pulsar consumer channel closed")
 					return
 				}
 				msgChannel <- &pulsarMessage{msg: msg}