diff --git a/internal/querycoordv2/observers/target_observer.go b/internal/querycoordv2/observers/target_observer.go
index 24bf930050e6a..3eef7d577c167 100644
--- a/internal/querycoordv2/observers/target_observer.go
+++ b/internal/querycoordv2/observers/target_observer.go
@@ -26,6 +26,8 @@ import (
 	"go.uber.org/zap"
 
 	"github.com/milvus-io/milvus-proto/go-api/v2/commonpb"
+	"github.com/milvus-io/milvus-proto/go-api/v2/milvuspb"
+	"github.com/milvus-io/milvus/internal/proto/indexpb"
 	"github.com/milvus-io/milvus/internal/proto/querypb"
 	"github.com/milvus-io/milvus/internal/querycoordv2/meta"
 	"github.com/milvus-io/milvus/internal/querycoordv2/params"
@@ -390,6 +392,10 @@ func (ob *TargetObserver) shouldUpdateCurrentTarget(ctx context.Context, collect
 
 	replicas := ob.meta.ReplicaManager.GetByCollection(collectionID)
 	actions := make([]*querypb.SyncAction, 0, 1)
+	var collectionInfo *milvuspb.DescribeCollectionResponse
+	var partitions []int64
+	var indexInfo []*indexpb.IndexInfo
+	var err error
 	for _, replica := range replicas {
 		leaders := ob.distMgr.ChannelDistManager.GetShardLeadersByReplica(replica)
 		for ch, leaderID := range leaders {
@@ -406,7 +412,34 @@ func (ob *TargetObserver) shouldUpdateCurrentTarget(ctx context.Context, collect
 			if updateVersionAction != nil {
 				actions = append(actions, updateVersionAction)
 			}
-			if !ob.sync(ctx, replica, leaderView, actions) {
+
+			if len(actions) == 0 {
+				continue
+			}
+
+			// init all the meta information
+			if collectionInfo == nil {
+				collectionInfo, err = ob.broker.DescribeCollection(ctx, collectionID)
+				if err != nil {
+					log.Warn("failed to get collection info", zap.Error(err))
+					return false
+				}
+
+				partitions, err = utils.GetPartitions(ob.meta.CollectionManager, collectionID)
+				if err != nil {
+					log.Warn("failed to get partitions", zap.Error(err))
+					return false
+				}
+
+				// Get collection index info
+				indexInfo, err = ob.broker.ListIndexes(ctx, collectionID)
+				if err != nil {
+					log.Warn("fail to get index info of collection", zap.Error(err))
+					return false
+				}
+			}
+
+			if !ob.sync(ctx, replica, leaderView, actions, collectionInfo, partitions, indexInfo) {
 				return false
 			}
 		}
@@ -415,7 +448,9 @@ func (ob *TargetObserver) shouldUpdateCurrentTarget(ctx context.Context, collect
 	return true
 }
 
-func (ob *TargetObserver) sync(ctx context.Context, replica *meta.Replica, leaderView *meta.LeaderView, diffs []*querypb.SyncAction) bool {
+func (ob *TargetObserver) sync(ctx context.Context, replica *meta.Replica, leaderView *meta.LeaderView, diffs []*querypb.SyncAction,
+	collectionInfo *milvuspb.DescribeCollectionResponse, partitions []int64, indexInfo []*indexpb.IndexInfo,
+) bool {
 	if len(diffs) == 0 {
 		return true
 	}
@@ -427,24 +462,6 @@ func (ob *TargetObserver) sync(ctx context.Context, replica *meta.Replica, leade
 		zap.String("channel", leaderView.Channel),
 	)
 
-	collectionInfo, err := ob.broker.DescribeCollection(ctx, leaderView.CollectionID)
-	if err != nil {
-		log.Warn("failed to get collection info", zap.Error(err))
-		return false
-	}
-	partitions, err := utils.GetPartitions(ob.meta.CollectionManager, leaderView.CollectionID)
-	if err != nil {
-		log.Warn("failed to get partitions", zap.Error(err))
-		return false
-	}
-
-	// Get collection index info
-	indexInfo, err := ob.broker.ListIndexes(ctx, collectionInfo.GetCollectionID())
-	if err != nil {
-		log.Warn("fail to get index info of collection", zap.Error(err))
-		return false
-	}
-
 	req := &querypb.SyncDistributionRequest{
 		Base: commonpbutil.NewMsgBase(
 			commonpbutil.WithMsgType(commonpb.MsgType_SyncDistribution),