diff --git a/internal/datanode/compaction/clustering_compactor.go b/internal/datanode/compaction/clustering_compactor.go
index 1fb6b8c3acb7..70fdaa5ee365 100644
--- a/internal/datanode/compaction/clustering_compactor.go
+++ b/internal/datanode/compaction/clustering_compactor.go
@@ -19,6 +19,7 @@ package compaction
 import (
 	"context"
 	"fmt"
+	sio "io"
 	"math"
 	"path"
 	"sort"
@@ -481,33 +482,33 @@ func (t *clusteringCompactionTask) mappingSegment(
 		fieldBinlogPaths = append(fieldBinlogPaths, ps)
 	}
 
-	for _, path := range fieldBinlogPaths {
-		bytesArr, err := t.binlogIO.Download(ctx, path)
-		blobs := make([]*storage.Blob, len(bytesArr))
-		var segmentSize int64
-		for i := range bytesArr {
-			blobs[i] = &storage.Blob{Value: bytesArr[i]}
-			segmentSize = segmentSize + int64(len(bytesArr[i]))
-		}
+	for _, paths := range fieldBinlogPaths {
+		allValues, err := t.binlogIO.Download(ctx, paths)
 		if err != nil {
-			log.Warn("download insertlogs wrong", zap.Strings("path", path), zap.Error(err))
+			log.Warn("compact wrong, fail to download insertLogs", zap.Error(err))
 			return err
 		}
-
-		pkIter, err := storage.NewInsertBinlogIterator(blobs, t.primaryKeyField.GetFieldID(), t.primaryKeyField.GetDataType())
+		blobs := lo.Map(allValues, func(v []byte, i int) *storage.Blob {
+			return &storage.Blob{Key: paths[i], Value: v}
+		})
+		pkIter, err := storage.NewBinlogDeserializeReader(blobs, t.primaryKeyField.GetFieldID())
 		if err != nil {
-			log.Warn("new insert binlogs Itr wrong", zap.Strings("path", path), zap.Error(err))
+			log.Warn("new insert binlogs Itr wrong", zap.Strings("paths", paths), zap.Error(err))
 			return err
 		}
 
 		var offset int64 = -1
-		for pkIter.HasNext() {
-			vInter, _ := pkIter.Next()
-			v, ok := vInter.(*storage.Value)
-			if !ok {
-				log.Warn("transfer interface to Value wrong", zap.Strings("path", path))
-				return errors.New("unexpected error")
+		for {
+			err := pkIter.Next()
+			if err != nil {
+				if err == sio.EOF {
+					break
+				} else {
+					log.Warn("compact wrong, failed to iter through data", zap.Error(err))
+					return err
+				}
 			}
+			v := pkIter.Value()
 			offset++
 
 			// Filtering deleted entity
@@ -524,7 +525,7 @@ func (t *clusteringCompactionTask) mappingSegment(
 
 			row, ok := v.Value.(map[typeutil.UniqueID]interface{})
 			if !ok {
-				log.Warn("transfer interface to map wrong", zap.Strings("path", path))
+				log.Warn("transfer interface to map wrong", zap.Strings("paths", paths))
 				return errors.New("unexpected error")
 			}