diff --git a/cpp/src/db/engine/ExecutionEngine.cpp b/cpp/src/db/engine/ExecutionEngine.cpp
deleted file mode 100644
index 3412eb34bd110cffb4496e36d834642c3e79e012..0000000000000000000000000000000000000000
--- a/cpp/src/db/engine/ExecutionEngine.cpp
+++ /dev/null
@@ -1,22 +0,0 @@
-/*******************************************************************************
- * Copyright 上海赜睿信息科技有限公司(Zilliz) - All Rights Reserved
- * Unauthorized copying of this file, via any medium is strictly prohibited.
- * Proprietary and confidential.
- ******************************************************************************/
-#include "ExecutionEngine.h"
-
-#include <easylogging++.h>
-
-namespace zilliz {
-namespace milvus {
-namespace engine {
-
-Status ExecutionEngine::AddWithIdArray(const std::vector<float>& vectors, const std::vector<long>& vector_ids) {
-    long n = (long)vector_ids.size();
-    return AddWithIds(n, vectors.data(), vector_ids.data());
-}
-
-
-} // namespace engine
-} // namespace milvus
-} // namespace zilliz
diff --git a/cpp/src/db/insert/MemTableFile.cpp b/cpp/src/db/insert/MemTableFile.cpp
index 25abb8db90377234224fcd6727d003066f1be6f1..5d55bebbaeb7c9f6c9b0532c53769d03be73d1a3 100644
--- a/cpp/src/db/insert/MemTableFile.cpp
+++ b/cpp/src/db/insert/MemTableFile.cpp
@@ -49,7 +49,7 @@ Status MemTableFile::Add(const VectorSource::Ptr &source, IDNumbers& vector_ids)
         std::string err_msg = "MemTableFile::Add: table_file_schema dimension = " +
             std::to_string(table_file_schema_.dimension_) + ", table_id = " + table_file_schema_.table_id_;
         ENGINE_LOG_ERROR << err_msg;
-        return Status(DB_ERROR, err_msg);
+        return Status(DB_ERROR, "not able to create table file");
     }
 
     size_t single_vector_mem_size = table_file_schema_.dimension_ * VECTOR_TYPE_SIZE;