Hive Sentry Problem while granting roles to a group

Question

Hi. I am trying to grant a role to a group using the below command:

GRANT ROLE student TO GROUP student-group;

But this is giving an error. It says it cannot grant role because of some syntax error. I have checked the syntax and it is right. I don't understand what the problem is. 

Answer 1

The group name you are trying to assign the role to is 'student-group'. Sentry allows granting roles to groups whose name is alphanumeric and the only special character allowed is an underscore (_). Because you have a hyphen (-). If there are any special characters apart from an underscore then you have to use backticks (`) as follows:

GRANT ROLE student TO GROUP `student-group`;

P.S.: It would have been better if you had shared the error log. It would have been easy to analyze.