@Alex Miller Am facing an issue, where irrespective of users defined for the queue all the users were able to run jobs in the queue. And i came across this article and tried to deny all users in root queue by entering space in root queue submit applications from 'Ambari Yarn queue manager' but in submit applications space character is not accepting. Could you kindly let us know, how to use space in submit_applications to deny access to users. ... View more