diff --git a/internal/querycoord/impl.go b/internal/querycoord/impl.go
index 7efd4ad97b..1ed285bb87 100644
--- a/internal/querycoord/impl.go
+++ b/internal/querycoord/impl.go
@@ -21,16 +21,16 @@ import (
 	"errors"
 	"fmt"
 
-	"github.com/milvus-io/milvus/internal/common"
-
 	"go.uber.org/zap"
 
+	"github.com/milvus-io/milvus/internal/common"
 	"github.com/milvus-io/milvus/internal/log"
 	"github.com/milvus-io/milvus/internal/proto/commonpb"
 	"github.com/milvus-io/milvus/internal/proto/internalpb"
 	"github.com/milvus-io/milvus/internal/proto/milvuspb"
 	"github.com/milvus-io/milvus/internal/proto/querypb"
 	"github.com/milvus-io/milvus/internal/util/metricsinfo"
+	"github.com/milvus-io/milvus/internal/util/typeutil"
 )
 
 // GetComponentStates return information about whether the coord is healthy
@@ -145,7 +145,8 @@ func (qc *QueryCoord) ShowCollections(ctx context.Context, req *querypb.ShowColl
 func (qc *QueryCoord) LoadCollection(ctx context.Context, req *querypb.LoadCollectionRequest) (*commonpb.Status, error) {
 	collectionID := req.CollectionID
 	//schema := req.Schema
-	log.Debug("loadCollectionRequest received", zap.String("role", Params.RoleName), zap.Int64("msgID", req.Base.MsgID), zap.Int64("collectionID", collectionID),
+	log.Debug("loadCollectionRequest received", zap.String("role", typeutil.QueryCoordRole),
+		zap.Int64("msgID", req.Base.MsgID), zap.Int64("collectionID", collectionID),
 		zap.Stringer("schema", req.Schema))
 	status := &commonpb.Status{
 		ErrorCode: commonpb.ErrorCode_Success,
@@ -182,7 +183,9 @@ func (qc *QueryCoord) LoadCollection(ctx context.Context, req *querypb.LoadColle
 		return status, nil
 	}
 
-	log.Debug("loadCollectionRequest completed", zap.String("role", Params.RoleName), zap.Int64("msgID", req.Base.MsgID), zap.Int64("collectionID", collectionID), zap.Any("status", status))
+	log.Debug("loadCollectionRequest completed", zap.String("role", typeutil.QueryCoordRole),
+		zap.Int64("msgID", req.Base.MsgID), zap.Int64("collectionID", collectionID),
+		zap.Any("status", status))
 	return status, nil
 }
 
@@ -190,7 +193,8 @@ func (qc *QueryCoord) LoadCollection(ctx context.Context, req *querypb.LoadColle
 func (qc *QueryCoord) ReleaseCollection(ctx context.Context, req *querypb.ReleaseCollectionRequest) (*commonpb.Status, error) {
 	//dbID := req.DbID
 	collectionID := req.CollectionID
-	log.Debug("releaseCollectionRequest received", zap.String("role", Params.RoleName), zap.Int64("msgID", req.Base.MsgID), zap.Int64("collectionID", collectionID))
+	log.Debug("releaseCollectionRequest received", zap.String("role", typeutil.QueryCoordRole),
+		zap.Int64("msgID", req.Base.MsgID), zap.Int64("collectionID", collectionID))
 	status := &commonpb.Status{
 		ErrorCode: commonpb.ErrorCode_Success,
 	}
@@ -230,7 +234,8 @@ func (qc *QueryCoord) ReleaseCollection(ctx context.Context, req *querypb.Releas
 		return status, nil
 	}
 
-	log.Debug("releaseCollectionRequest completed", zap.String("role", Params.RoleName), zap.Int64("msgID", req.Base.MsgID), zap.Int64("collectionID", collectionID))
+	log.Debug("releaseCollectionRequest completed", zap.String("role", typeutil.QueryCoordRole),
+		zap.Int64("msgID", req.Base.MsgID), zap.Int64("collectionID", collectionID))
 	//qc.MetaReplica.printMeta()
 	//qc.cluster.printMeta()
 	return status, nil
@@ -304,7 +309,9 @@ func (qc *QueryCoord) ShowPartitions(ctx context.Context, req *querypb.ShowParti
 func (qc *QueryCoord) LoadPartitions(ctx context.Context, req *querypb.LoadPartitionsRequest) (*commonpb.Status, error) {
 	collectionID := req.CollectionID
 	partitionIDs := req.PartitionIDs
-	log.Debug("loadPartitionRequest received", zap.String("role", Params.RoleName), zap.Int64("msgID", req.Base.MsgID), zap.Int64("collectionID", collectionID), zap.Int64s("partitionIDs", partitionIDs))
+	log.Debug("loadPartitionRequest received", zap.String("role", typeutil.QueryCoordRole),
+		zap.Int64("msgID", req.Base.MsgID), zap.Int64("collectionID", collectionID),
+		zap.Int64s("partitionIDs", partitionIDs))
 	status := &commonpb.Status{
 		ErrorCode: commonpb.ErrorCode_Success,
 	}
@@ -320,7 +327,9 @@ func (qc *QueryCoord) LoadPartitions(ctx context.Context, req *querypb.LoadParti
 		status.ErrorCode = commonpb.ErrorCode_UnexpectedError
 		err := errors.New("partitionIDs are empty")
 		status.Reason = err.Error()
-		log.Debug("loadPartitionRequest completed", zap.String("role", Params.RoleName), zap.Int64("msgID", req.Base.MsgID), zap.Int64("collectionID", req.CollectionID), zap.Int64s("partitionIDs", partitionIDs))
+		log.Debug("loadPartitionRequest completed", zap.String("role", typeutil.QueryCoordRole),
+			zap.Int64("msgID", req.Base.MsgID), zap.Int64("collectionID", req.CollectionID),
+			zap.Int64s("partitionIDs", partitionIDs))
 		return status, nil
 	}
 
@@ -345,7 +354,9 @@ func (qc *QueryCoord) LoadPartitions(ctx context.Context, req *querypb.LoadParti
 		}
 
 		if len(partitionIDsToLoad) == 0 {
-			log.Debug("loadPartitionRequest completed", zap.String("role", Params.RoleName), zap.Int64("msgID", req.Base.MsgID), zap.Int64("collectionID", req.CollectionID), zap.Int64s("partitionIDs", partitionIDs))
+			log.Debug("loadPartitionRequest completed", zap.String("role", typeutil.QueryCoordRole),
+				zap.Int64("msgID", req.Base.MsgID), zap.Int64("collectionID", req.CollectionID),
+				zap.Int64s("partitionIDs", partitionIDs))
 			return status, nil
 		}
 		req.PartitionIDs = partitionIDsToLoad
@@ -372,11 +383,15 @@ func (qc *QueryCoord) LoadPartitions(ctx context.Context, req *querypb.LoadParti
 	if err != nil {
 		status.ErrorCode = commonpb.ErrorCode_UnexpectedError
 		status.Reason = err.Error()
-		log.Debug("loadPartitionRequest completed", zap.String("role", Params.RoleName), zap.Int64("msgID", req.Base.MsgID), zap.Int64("collectionID", req.CollectionID), zap.Int64s("partitionIDs", partitionIDs))
+		log.Debug("loadPartitionRequest completed", zap.String("role", typeutil.QueryCoordRole),
+			zap.Int64("msgID", req.Base.MsgID), zap.Int64("collectionID", req.CollectionID),
+			zap.Int64s("partitionIDs", partitionIDs))
 		return status, nil
 	}
 
-	log.Debug("loadPartitionRequest completed", zap.String("role", Params.RoleName), zap.Int64("msgID", req.Base.MsgID), zap.Int64("collectionID", req.CollectionID), zap.Int64s("partitionIDs", partitionIDs))
+	log.Debug("loadPartitionRequest completed", zap.String("role", typeutil.QueryCoordRole),
+		zap.Int64("msgID", req.Base.MsgID), zap.Int64("collectionID", req.CollectionID),
+		zap.Int64s("partitionIDs", partitionIDs))
 	return status, nil
 }
 
@@ -385,7 +400,9 @@ func (qc *QueryCoord) ReleasePartitions(ctx context.Context, req *querypb.Releas
 	//dbID := req.DbID
 	collectionID := req.CollectionID
 	partitionIDs := req.PartitionIDs
-	log.Debug("releasePartitionRequest received", zap.String("role", Params.RoleName), zap.Int64("msgID", req.Base.MsgID), zap.Int64("collectionID", req.CollectionID), zap.Int64s("partitionIDs", partitionIDs))
+	log.Debug("releasePartitionRequest received", zap.String("role", typeutil.QueryCoordRole),
+		zap.Int64("msgID", req.Base.MsgID), zap.Int64("collectionID", req.CollectionID),
+		zap.Int64s("partitionIDs", partitionIDs))
 	status := &commonpb.Status{
 		ErrorCode: commonpb.ErrorCode_Success,
 	}
@@ -407,7 +424,9 @@ func (qc *QueryCoord) ReleasePartitions(ctx context.Context, req *querypb.Releas
 		status.ErrorCode = commonpb.ErrorCode_UnexpectedError
 		err := errors.New("partitionIDs are empty")
 		status.Reason = err.Error()
-		log.Debug("releasePartitionsRequest completed", zap.String("role", Params.RoleName), zap.Int64("msgID", req.Base.MsgID), zap.Int64("collectionID", req.CollectionID), zap.Int64s("partitionIDs", partitionIDs))
+		log.Debug("releasePartitionsRequest completed", zap.String("role", typeutil.QueryCoordRole),
+			zap.Int64("msgID", req.Base.MsgID), zap.Int64("collectionID", req.CollectionID),
+			zap.Int64s("partitionIDs", partitionIDs))
 		return status, nil
 	}
 
@@ -443,7 +462,9 @@ func (qc *QueryCoord) ReleasePartitions(ctx context.Context, req *querypb.Releas
 		status.Reason = err.Error()
 		return status, nil
 	}
-	log.Debug("releasePartitionRequest completed", zap.String("role", Params.RoleName), zap.Int64("msgID", req.Base.MsgID), zap.Int64("collectionID", collectionID), zap.Int64s("partitionIDs", partitionIDs))
+	log.Debug("releasePartitionRequest completed", zap.String("role", typeutil.QueryCoordRole),
+		zap.Int64("msgID", req.Base.MsgID), zap.Int64("collectionID", collectionID),
+		zap.Int64s("partitionIDs", partitionIDs))
 	//qc.MetaReplica.printMeta()
 	//qc.cluster.printMeta()
 	return status, nil
@@ -563,7 +584,7 @@ func (qc *QueryCoord) GetSegmentInfo(ctx context.Context, req *querypb.GetSegmen
 // LoadBalance would do a load balancing operation between query nodes
 func (qc *QueryCoord) LoadBalance(ctx context.Context, req *querypb.LoadBalanceRequest) (*commonpb.Status, error) {
 	log.Debug("LoadBalanceRequest received",
-		zap.String("role", Params.RoleName),
+		zap.String("role", typeutil.QueryCoordRole),
 		zap.Int64("msgID", req.Base.MsgID),
 		zap.Any("req", req),
 	)
@@ -602,7 +623,7 @@ func (qc *QueryCoord) LoadBalance(ctx context.Context, req *querypb.LoadBalanceR
 		return status, nil
 	}
 	log.Debug("LoadBalanceRequest completed",
-		zap.String("role", Params.RoleName),
+		zap.String("role", typeutil.QueryCoordRole),
 		zap.Int64("msgID", req.Base.MsgID),
 		zap.Any("req", req),
 	)