diff --git a/internal/core/src/segcore/storagev2translator/GroupChunkTranslator.cpp b/internal/core/src/segcore/storagev2translator/GroupChunkTranslator.cpp
index ee894c696e..35775d407e 100644
--- a/internal/core/src/segcore/storagev2translator/GroupChunkTranslator.cpp
+++ b/internal/core/src/segcore/storagev2translator/GroupChunkTranslator.cpp
@@ -41,7 +41,8 @@ GroupChunkTranslator::GroupChunkTranslator(
     FieldDataInfo column_group_info,
     std::vector<std::string> insert_files,
     bool use_mmap,
-    std::vector<milvus_storage::RowGroupMetadataVector>& row_group_meta_list,
+    const std::vector<milvus_storage::RowGroupMetadataVector>&
+        row_group_meta_list,
     milvus_storage::FieldIDList field_id_list,
     milvus::proto::common::LoadPriority load_priority)
     : segment_id_(segment_id),
diff --git a/internal/core/src/segcore/storagev2translator/GroupChunkTranslator.h b/internal/core/src/segcore/storagev2translator/GroupChunkTranslator.h
index b81367dd08..8e7c036f77 100644
--- a/internal/core/src/segcore/storagev2translator/GroupChunkTranslator.h
+++ b/internal/core/src/segcore/storagev2translator/GroupChunkTranslator.h
@@ -41,7 +41,7 @@ class GroupChunkTranslator
         FieldDataInfo column_group_info,
         std::vector<std::string> insert_files,
         bool use_mmap,
-        std::vector<milvus_storage::RowGroupMetadataVector>&
+        const std::vector<milvus_storage::RowGroupMetadataVector>&
             row_group_meta_list,
         milvus_storage::FieldIDList field_id_list,
         milvus::proto::common::LoadPriority load_priority);
@@ -82,7 +82,7 @@ class GroupChunkTranslator
     std::unordered_map<FieldId, FieldMeta> field_metas_;
     FieldDataInfo column_group_info_;
     std::vector<std::string> insert_files_;
-    std::vector<milvus_storage::RowGroupMetadataVector>& row_group_meta_list_;
+    std::vector<milvus_storage::RowGroupMetadataVector> row_group_meta_list_;
     milvus_storage::FieldIDList field_id_list_;
     SchemaPtr schema_;
     bool is_sorted_by_pk_;