optimize grpc insert

Former-commit-id: 1f9d5ee34055303208c48e745d1252ae3c0b60a8

cpp/src/server/grpc_impl/GrpcRequestTask.cpp

@@ -428,7 +428,6 @@ InsertTask::OnExecute() {
 
         // TODO: change to one dimension array in protobuf or use multiple-thread to copy the data
         for (size_t i = 0; i < insert_param_.row_record_array_size(); i++) {
-            for (size_t j = 0; j < table_info.dimension_; j++) {
             if (insert_param_.row_record_array(i).vector_data().empty()) {
                 return SetError(SERVER_INVALID_ROWRECORD_ARRAY, "Row record float array is empty");
             }
@@ -440,8 +439,10 @@ InsertTask::OnExecute() {
                                         std::to_string(table_info.dimension_);
                 return SetError(error_code, error_msg);
             }
-                vec_f[i * table_info.dimension_ + j] = insert_param_.row_record_array(i).vector_data(j);
-            }
+
+            memcpy(&vec_f[i * table_info.dimension_],
+                   insert_param_.row_record_array(i).vector_data().data(),
+                   table_info.dimension_ * sizeof(float));
         }
 
         rc.ElapseFromBegin("prepare vectors data");
@@ -453,8 +454,7 @@ InsertTask::OnExecute() {
             vec_ids[i] = insert_param_.row_id_array(i);
         }
 
-        stat = DBWrapper::DB()->InsertVectors(insert_param_.table_name(), vec_count, vec_f.data(),
-                                              vec_ids);
+        stat = DBWrapper::DB()->InsertVectors(insert_param_.table_name(), vec_count, vec_f.data(), vec_ids);
         rc.ElapseFromBegin("add vectors to engine");
         if (!stat.ok()) {
             return SetError(SERVER_CACHE_ERROR, "Cache error: " + stat.ToString());