diff --git a/internal/querycoordv2/task/executor.go b/internal/querycoordv2/task/executor.go
index cfa4b93c209d0c35c590c8fdecd68be09b4a5bfa..37f020c8ee2684c73fd1431bbaabaa80c2e6f8ab 100644
--- a/internal/querycoordv2/task/executor.go
+++ b/internal/querycoordv2/task/executor.go
@@ -396,7 +396,12 @@ func (ex *Executor) subDmChannel(task *ChannelTask, step int) error {
 		log.Warn("failed to get partitions of collection")
 		return err
 	}
-	metricType, err := getMetricType(ctx, task.CollectionID(), schema, ex.broker)
+	indexInfo, err := ex.broker.DescribeIndex(ctx, task.CollectionID())
+	if err != nil {
+		log.Warn("fail to get index meta of collection")
+		return err
+	}
+	metricType, err := getMetricType(indexInfo, schema)
 	if err != nil {
 		log.Warn("failed to get metric type", zap.Error(err))
 		return err
@@ -414,7 +419,7 @@ func (ex *Executor) subDmChannel(task *ChannelTask, step int) error {
 		log.Warn(msg, zap.String("channelName", action.ChannelName()))
 		return merr.WrapErrChannelReduplicate(action.ChannelName())
 	}
-	req := packSubChannelRequest(task, action, schema, loadMeta, dmChannel)
+	req := packSubChannelRequest(task, action, schema, loadMeta, dmChannel, indexInfo)
 	err = fillSubChannelRequest(ctx, req, ex.broker)
 	if err != nil {
 		log.Warn("failed to subscribe channel, failed to fill the request with segments",
diff --git a/internal/querycoordv2/task/utils.go b/internal/querycoordv2/task/utils.go
index d31c5e8d6ff329d957be68c9d7515cfb44260aca..50368ca14400e816866b5d79cb9f8da9784f15f1 100644
--- a/internal/querycoordv2/task/utils.go
+++ b/internal/querycoordv2/task/utils.go
@@ -138,19 +138,21 @@ func packSubChannelRequest(
 	schema *schemapb.CollectionSchema,
 	loadMeta *querypb.LoadMetaInfo,
 	channel *meta.DmChannel,
+	indexInfo []*indexpb.IndexInfo,
 ) *querypb.WatchDmChannelsRequest {
 	return &querypb.WatchDmChannelsRequest{
 		Base: commonpbutil.NewMsgBase(
 			commonpbutil.WithMsgType(commonpb.MsgType_WatchDmChannels),
 			commonpbutil.WithMsgID(task.ID()),
 		),
-		NodeID:       action.Node(),
-		CollectionID: task.CollectionID(),
-		Infos:        []*datapb.VchannelInfo{channel.VchannelInfo},
-		Schema:       schema,   // assign it for compatibility of rolling upgrade from 2.2.x to 2.3
-		LoadMeta:     loadMeta, // assign it for compatibility of rolling upgrade from 2.2.x to 2.3
-		ReplicaID:    task.ReplicaID(),
-		Version:      time.Now().UnixNano(),
+		NodeID:        action.Node(),
+		CollectionID:  task.CollectionID(),
+		Infos:         []*datapb.VchannelInfo{channel.VchannelInfo},
+		Schema:        schema,   // assign it for compatibility of rolling upgrade from 2.2.x to 2.3
+		LoadMeta:      loadMeta, // assign it for compatibility of rolling upgrade from 2.2.x to 2.3
+		ReplicaID:     task.ReplicaID(),
+		Version:       time.Now().UnixNano(),
+		IndexInfoList: indexInfo,
 	}
 }
 
@@ -201,11 +203,7 @@ func getShardLeader(replicaMgr *meta.ReplicaManager, distMgr *meta.DistributionM
 	return distMgr.GetShardLeader(replica, channel)
 }
 
-func getMetricType(ctx context.Context, collection int64, schema *schemapb.CollectionSchema, broker meta.Broker) (string, error) {
-	indexInfos, err := broker.DescribeIndex(ctx, collection)
-	if err != nil {
-		return "", err
-	}
+func getMetricType(indexInfos []*indexpb.IndexInfo, schema *schemapb.CollectionSchema) (string, error) {
 	vecField, err := typeutil.GetVectorFieldSchema(schema)
 	if err != nil {
 		return "", err
diff --git a/internal/querycoordv2/task/utils_test.go b/internal/querycoordv2/task/utils_test.go
index 4eb5cabb011b32110046e9f259cfc840f64774cc..788cadc4718dea8d541922a2b407f56ff8870d6a 100644
--- a/internal/querycoordv2/task/utils_test.go
+++ b/internal/querycoordv2/task/utils_test.go
@@ -17,22 +17,17 @@
 package task
 
 import (
-	"context"
-	"fmt"
 	"testing"
 
 	"github.com/stretchr/testify/assert"
-	"github.com/stretchr/testify/mock"
 
 	"github.com/milvus-io/milvus-proto/go-api/v2/commonpb"
 	"github.com/milvus-io/milvus-proto/go-api/v2/schemapb"
 	"github.com/milvus-io/milvus/internal/proto/indexpb"
-	"github.com/milvus-io/milvus/internal/querycoordv2/meta"
 	"github.com/milvus-io/milvus/pkg/common"
 )
 
 func Test_getMetricType(t *testing.T) {
-	ctx := context.Background()
 	collection := int64(1)
 	schema := &schemapb.CollectionSchema{
 		Name: "TestGetMetricType",
@@ -50,50 +45,35 @@ func Test_getMetricType(t *testing.T) {
 			},
 		},
 	}
+
+	indexInfo2 := &indexpb.IndexInfo{
+		CollectionID: collection,
+		FieldID:      100,
+	}
+
 	t.Run("test normal", func(t *testing.T) {
-		broker := meta.NewMockBroker(t)
-		broker.EXPECT().DescribeIndex(mock.Anything, collection).
-			Return([]*indexpb.IndexInfo{indexInfo}, nil)
-		metricType, err := getMetricType(ctx, collection, schema, broker)
+		metricType, err := getMetricType([]*indexpb.IndexInfo{indexInfo}, schema)
 		assert.NoError(t, err)
 		assert.Equal(t, "L2", metricType)
 	})
-	t.Run("test describe index failed", func(t *testing.T) {
-		broker := meta.NewMockBroker(t)
-		broker.EXPECT().DescribeIndex(mock.Anything, collection).
-			Return(nil, fmt.Errorf("mock err"))
-		_, err := getMetricType(ctx, collection, schema, broker)
-		assert.Error(t, err)
-	})
+
 	t.Run("test get vec field failed", func(t *testing.T) {
-		broker := meta.NewMockBroker(t)
-		broker.EXPECT().DescribeIndex(mock.Anything, collection).
-			Return([]*indexpb.IndexInfo{indexInfo}, nil)
-		_, err := getMetricType(ctx, collection, &schemapb.CollectionSchema{
+		_, err := getMetricType([]*indexpb.IndexInfo{indexInfo}, &schemapb.CollectionSchema{
 			Name: "TestGetMetricType",
-		}, broker)
+		})
 		assert.Error(t, err)
 	})
 	t.Run("test field id mismatch", func(t *testing.T) {
-		broker := meta.NewMockBroker(t)
-		broker.EXPECT().DescribeIndex(mock.Anything, collection).
-			Return([]*indexpb.IndexInfo{indexInfo}, nil)
-		_, err := getMetricType(ctx, collection, &schemapb.CollectionSchema{
+		_, err := getMetricType([]*indexpb.IndexInfo{indexInfo}, &schemapb.CollectionSchema{
 			Name: "TestGetMetricType",
 			Fields: []*schemapb.FieldSchema{
 				{FieldID: -1, Name: "vec", DataType: schemapb.DataType_FloatVector},
 			},
-		}, broker)
+		})
 		assert.Error(t, err)
 	})
 	t.Run("test no metric type", func(t *testing.T) {
-		broker := meta.NewMockBroker(t)
-		broker.EXPECT().DescribeIndex(mock.Anything, collection).
-			Return([]*indexpb.IndexInfo{{
-				CollectionID: collection,
-				FieldID:      100,
-			}}, nil)
-		_, err := getMetricType(ctx, collection, schema, broker)
+		_, err := getMetricType([]*indexpb.IndexInfo{indexInfo2}, schema)
 		assert.Error(t, err)
 	})
 }