[FEAT MERGE] Phase one of 3A project

Co-authored-by: rolandqi <qikai456@126.com>
Co-authored-by: yangzhifeng <yangzhifeng83@gmail.com>

src/sql/engine/cmd/ob_xa_executor.cpp

@@ -395,6 +395,7 @@ int ObPlXaEndTransExecutor::execute_(const ObString &gtrid_str,
 
 int ObPlXaCommitExecutor::execute(ObExecContext &ctx, ObXaCommitStmt &stmt)
 {
+  ACTIVE_SESSION_FLAG_SETTER_GUARD(in_committing);
   int ret = OB_SUCCESS;
   ObSQLSessionInfo *my_session = GET_MY_SESSION(ctx);
   ObTxDesc *tx_desc = my_session->get_tx_desc();