diff --git a/.gitlab_test.yaml b/.gitlab_test.yaml
new file mode 100644
index 000000000..292ff9665
--- /dev/null
+++ b/.gitlab_test.yaml
@@ -0,0 +1,134 @@
+- name: pass_prepare
+  scope:
+    branch:
+      - '*'
+    dept:
+      - OceanBase-OceanBase-产品技术部-技术部-底层引擎部-事务
+      - OceanBase-OceanBase-产品技术部-技术部-底层引擎部-RS组
+      - OceanBase-OceanBase-产品技术部-技术部-底层引擎部-日志
+  must_success:
+    false
+- name: weak_read
+  scope:
+    branch:
+      - '*'
+    dept:
+      - OceanBase-OceanBase-产品技术部-技术部-底层引擎部-事务
+  must_success:
+    false
+- name: duplicate_table_access
+  scope:
+    branch:
+      - '*'
+    dept:
+      - OceanBase-OceanBase-产品技术部-技术部-底层引擎部-事务
+  must_success:
+    false
+- name: PREPARE_STANDBY
+  scope:
+    branch:
+      - '*'
+    dept:
+      - OceanBase-OceanBase-产品技术部-技术部-底层引擎部-RS组
+      - OceanBase-OceanBase-产品技术部-技术部-底层引擎部-日志
+  must_success:
+    false
+- name: direct_load
+  scope:
+    branch:
+      - '*'
+    dept:
+      - OceanBase-OceanBase-产品技术部-技术部-底层引擎部-存储-索引与DDL
+      - OceanBase-OceanBase-产品技术部-技术部-底层引擎部-存储-物化
+  must_success:
+    false
+- name: ddlhome
+  scope:
+    branch:
+      - '*'
+    dept:
+      - OceanBase-OceanBase-产品技术部-技术部-底层引擎部-存储-索引与DDL
+  must_success:
+    false
+- name: mv_home
+  scope:
+    branch:
+      - '*'
+    dept:
+      - OceanBase-OceanBase-产品技术部-技术部-底层引擎部-存储-物化
+  must_success:
+    false
+- name: obtest
+  scope:
+    branch:
+      - '*'
+    dept:
+      - OceanBase-OceanBase-产品技术部-技术部-底层引擎部-存储-高可靠
+  must_success:
+    false
+- name: obbstool_farm
+  scope:
+    branch:
+      - '*'
+    dept:
+      - OceanBase-OceanBase-产品技术部-技术部-底层引擎部-存储-高可靠
+      - OceanBase-OceanBase-产品技术部-技术部-底层引擎部-云存储
+  must_success:
+    false
+- name: stress_json
+  scope:
+    branch:
+      - '*'
+    dept:
+      - OceanBase-OceanBase-产品技术部-技术部-深圳研发中心
+  must_success:
+    false
+- name: stress_xml_4.2
+  scope:
+    branch:
+      - '*'
+    dept:
+      - OceanBase-OceanBase-产品技术部-技术部-深圳研发中心
+  must_success:
+    false
+- name: PASS_SQL
+  scope:
+    branch:
+      - '*'
+    dept:
+      - OceanBase-OceanBase-产品技术部-技术部-SQL-执行器
+      - OceanBase-OceanBase-产品技术部-技术部-SQL-优化器
+  must_success:
+    false
+- name: PASS_PL
+  scope:
+    branch:
+      - '*'
+    dept:
+      - OceanBase-OceanBase-产品技术部-技术部-SQL-存储过程
+  must_success:
+    false
+- name: VOS_PASS
+  scope:
+    branch:
+      - '*'
+    dept:
+      - OceanBase-OceanBase-产品技术部-技术部-底层引擎部-系统
+  must_success:
+    false
+- name: PASS_DAS
+  scope:
+    branch:
+      - '*'
+    dept:
+      - OceanBase-OceanBase-产品技术部-技术部-底层引擎部-交互诊断
+  must_success:
+    false
+- name: QA_DAS_REGRESSION
+  scope:
+    branch:
+      - '*'
+    dept:
+      - OceanBase-OceanBase-产品技术部-技术部-底层引擎部-交互诊断
+  must_success:
+    false
diff --git a/build.sh b/build.sh
index aed1edac5..745f6836b 100755
--- a/build.sh
+++ b/build.sh
@@ -178,6 +178,11 @@ function build
         # build soft link for ccls
         ln -sf ${TOPDIR}/build_ccls/compile_commands.json ${TOPDIR}/compile_commands.json
         ;;
+      xclangd)
+        do_build "$@" -DCMAKE_BUILD_TYPE=Debug -DOB_USE_LLD=$LLD_OPTION -DOB_ENABLE_UNITY=OFF
+        # build soft link for clangd
+        ln -sf ${TOPDIR}/build_clangd/compile_commands.json ${TOPDIR}/compile_commands.json
+        ;;
       xperf)
         do_build "$@" -DCMAKE_BUILD_TYPE=RelWithDebInfo -DENABLE_AUTO_FDO=ON -DENABLE_THIN_LTO=ON -DOB_USE_LLD=$LLD_OPTION
         ;;
diff --git a/src/rootserver/ob_balance_task_execute_service.cpp b/src/rootserver/ob_balance_task_execute_service.cpp
index 921e8dabb..c3bb9b4a1 100755
--- a/src/rootserver/ob_balance_task_execute_service.cpp
+++ b/src/rootserver/ob_balance_task_execute_service.cpp
@@ -343,10 +343,10 @@ int ObBalanceTaskExecuteService::execute_task_()
       ObTimeoutCtx timeout_ctx;
       const int64_t balance_task_execute_timeout = GCONF.internal_sql_execute_timeout + 100 * 1000 * 1000L; // +100s
       DEBUG_SYNC(BEFORE_EXECUTE_BALANCE_TASK);
-      if (OB_FAIL(trans.start(sql_proxy_, tenant_id_))) {
-        LOG_WARN("failed to start trans", KR(ret), K(tenant_id_));
-      } else if (OB_FAIL(ObShareUtil::set_default_timeout_ctx(timeout_ctx, balance_task_execute_timeout))) {
+      if (OB_FAIL(ObShareUtil::set_default_timeout_ctx(timeout_ctx, balance_task_execute_timeout))) {
         LOG_WARN("failed to get rs default timeout ctx", KR(ret));
+      } else if (OB_FAIL(trans.start(sql_proxy_, tenant_id_))) {
+        LOG_WARN("failed to start trans", KR(ret), K(tenant_id_));
       } else if (OB_FAIL(get_balance_job_task_for_update_(task, job, task_in_trans, trans))) {
         LOG_WARN("failed to get job", KR(ret), K(task));
       } else if (task_in_trans.get_task_status().is_finish_status()) {
diff --git a/src/share/balance/ob_balance_task_table_operator.cpp b/src/share/balance/ob_balance_task_table_operator.cpp
index a32fe1b38..d6dbcdd85 100644
--- a/src/share/balance/ob_balance_task_table_operator.cpp
+++ b/src/share/balance/ob_balance_task_table_operator.cpp
@@ -17,6 +17,7 @@
 #include "lib/mysqlclient/ob_mysql_result.h"//MySQLResult
 #include "lib/mysqlclient/ob_mysql_proxy.h"//MySQLResult
 #include "lib/mysqlclient/ob_mysql_transaction.h"//ObMySQLTrans
+#include "lib/utility/ob_tracepoint.h" // ERRSIM_POINT_DEF
 #include "share/inner_table/ob_inner_table_schema.h"//ALL_BALANCE_TASK_TNAME
 #include "share/ob_dml_sql_splicer.h"//ObDMLSqlSplicer
 #include "share/balance/ob_balance_job_table_operator.h"//job_status
@@ -604,6 +605,8 @@ int ObBalanceTaskTableOperator::start_transfer_task(const uint64_t tenant_id,
   return ret;
 }
 
+ERRSIM_POINT_DEF(EN_FINISH_TRANSFER_TASK_COST_TOO_MUCH_TIME);
+
 int ObBalanceTaskTableOperator::finish_transfer_task(
     const ObBalanceTask &balance_task,
     const ObTransferTaskID transfer_task_id,
@@ -670,6 +673,11 @@ int ObBalanceTaskTableOperator::finish_transfer_task(
     all_part_transferred = true;
   }
 
+  // only for test
+  if (EN_FINISH_TRANSFER_TASK_COST_TOO_MUCH_TIME) {
+    ob_usleep(31 * 1000 * 1000L); // default internal_sql_execute_timeout + 1s
+  }
+
   return ret;
 }
 //maybe in trans TODO