--- contrib/libs/opentelemetry-cpp/exporters/otlp/src/otlp_grpc_client.cc	(index)
+++ contrib/libs/opentelemetry-cpp/exporters/otlp/src/otlp_grpc_client.cc	(working tree)
@@ -346,1 +346,1 @@ std::shared_ptr<grpc::Channel> OtlpGrpcClient::MakeChannel(const OtlpGrpcClientO
-  std::string grpc_target = GetGrpcTarget(options.endpoint);
+  TString grpc_target = GetGrpcTarget(options.endpoint);
@@ -355,1 +355,1 @@ std::shared_ptr<grpc::Channel> OtlpGrpcClient::MakeChannel(const OtlpGrpcClientO
-  grpc_arguments.SetUserAgentPrefix(options.user_agent);
+  grpc_arguments.SetUserAgentPrefix(TString{options.user_agent});
@@ -453,5 +453,5 @@ std::unique_ptr<grpc::ClientContext> OtlpGrpcClient::MakeClientContext(
   for (auto &header : options.metadata)
   {
-    context->AddMetadata(header.first,
-                         opentelemetry::ext::http::common::UrlDecoder::Decode(header.second));
+    context->AddMetadata(TString(header.first),
+                         TString(opentelemetry::ext::http::common::UrlDecoder::Decode(header.second)));
   }
--- contrib/libs/opentelemetry-cpp/exporters/otlp/src/otlp_http_client.cc	(index)
+++ contrib/libs/opentelemetry-cpp/exporters/otlp/src/otlp_http_client.cc	(working tree)
@@ -503,7 +503,7 @@ void ConvertGenericFieldToJson(nlohmann::json &value,
       break;
     }
     case google::protobuf::FieldDescriptor::CPPTYPE_STRING: {
-      std::string empty;
+      TString empty;
       if (field_descriptor->type() == google::protobuf::FieldDescriptor::TYPE_BYTES)
       {
         value = BytesMapping(
@@ -591,7 +591,7 @@ void ConvertListFieldToJson(nlohmann::json &value,
       break;
     }
     case google::protobuf::FieldDescriptor::CPPTYPE_STRING: {
-      std::string empty;
+      TString empty;
       if (field_descriptor->type() == google::protobuf::FieldDescriptor::TYPE_BYTES)
       {
         for (int i = 0; i < field_size; ++i)
--- contrib/libs/opentelemetry-cpp/exporters/otlp/src/otlp_grpc_client.cc	(index)
+++ contrib/libs/opentelemetry-cpp/exporters/otlp/src/otlp_grpc_client.cc	(working tree)
@@ -453,7 +453,7 @@ void OtlpGrpcClient::PopulateChannelArguments(const OtlpGrpcClientOptions &optio
         std::min(std::max(options.retry_policy_max_backoff.count(), 0.f), 999999999.f),
         std::min(std::max(options.retry_policy_backoff_multiplier, 0.f), 999999999.f));
 
-    grpc_arguments.SetServiceConfigJSON(service_config);
+    grpc_arguments.SetServiceConfigJSON(TString{service_config});
   }
 #endif  // ENABLE_OTLP_RETRY_PREVIEW
 }