Batch job cancel not killing running tasks when cancelled


Is it possible to kill running tasks when a batch job is cancelled. Sometimes when a resource contention issue arises during testing a large job (that was not present when running on small scale), these tasks might get stuck going realllllllly slow and probably never complete. In this case, I cancel the job, yet these tasks remain. And without cluster admin with the new version, I am unable to kill the tasks without intervention.