diff --git a/be/src/common/config.cpp b/be/src/common/config.cpp
index 267a12c0ecc99b..788b1cd246121e 100644
--- a/be/src/common/config.cpp
+++ b/be/src/common/config.cpp
@@ -1410,6 +1410,8 @@ DEFINE_mBool(enable_sleep_between_delete_cumu_compaction, "false");
 
 DEFINE_mInt32(compaction_num_per_round, "1");
 
+DEFINE_mString(brpc_connection_type, "single");
+
 // clang-format off
 #ifdef BE_TEST
 // test s3
diff --git a/be/src/common/config.h b/be/src/common/config.h
index 462ba5c8f36ab0..01df89eebf08cc 100644
--- a/be/src/common/config.h
+++ b/be/src/common/config.h
@@ -1495,6 +1495,8 @@ DECLARE_Bool(enable_table_size_correctness_check);
 DECLARE_mBool(enable_sleep_between_delete_cumu_compaction);
 
 DECLARE_mInt32(compaction_num_per_round);
+// Set default of brpc_connection_type to "single/pooled/short".
+DECLARE_String(brpc_connection_type);
 
 #ifdef BE_TEST
 // test s3
diff --git a/be/src/util/brpc_client_cache.cpp b/be/src/util/brpc_client_cache.cpp
index c5a6488787879b..95c1a975c0bcc9 100644
--- a/be/src/util/brpc_client_cache.cpp
+++ b/be/src/util/brpc_client_cache.cpp
@@ -34,7 +34,7 @@ BrpcClientCache<PBackendService_Stub>::BrpcClientCache(std::string protocol,
                                                        std::string connection_type,
                                                        std::string connection_group)
         : _protocol(protocol),
-          _connection_type(connection_type),
+          _connection_type(connection_type == "" ? config::brpc_connection_type : connection_type),
           _connection_group(connection_group) {
     if (connection_group == "streaming") {
         REGISTER_HOOK_METRIC(brpc_stream_endpoint_stub_count,