Role management

[Gerardo Vázquez]

Hi all,

I've just started playing with permissions on Hive, and although I can 
create/drop roles and use grant/revoke but I'm not been able to find 
something like 'show roles' to display all the roles. I know I can 
retrieve this info from the metastore (mysql), Is there any other way to 
do this (from hive)?

Thanks in advanced

Gerardo