To force a restart at the end of test, the option file must be non-empty, it's...

To force a restart at the end of test, the option file must be non-empty, it's not enough if it exists and is empty.


mysql-test/t/rpl_dual_pos_advance-master.opt:
  the option file must be non-empty (because there's a -z test in mysql-test-run)

mysql-test/t/rpl_dual_pos_advance-master.opt

+--loose-to-force-a-restart