Thanks a lot Owen & Lefty. Sorry for the late reply, got a bit busy during the weekend.
So... what I understand is: 1. To enable security in Hive you need minimum of Hive 0.10 and Kerberos enabled. 2. The best option is to protect the HDFS directories that the data is stored in. 3. The user roles in Hive are advisory only. Everyone is an admin so anyone can grant anyone additional permissions. But since permissions on the HDFS dir can't be changed by any user, the data will be secure. Will everyone being an admin be changed in a future version of Hive? Is it difficult to implement? I guess it will be more helpful if there was a single or a group of predefined admins. Thanks, Austin On Sat, May 11, 2013 at 12:50 AM, Lefty Leverenz <le...@hortonworks.com>wrote: > Hive 0.10's metastore server security is documented in the revised > Authorization wiki, which your link didn't go to because the name had been > changed from "auth" to "Authorization" (sorry about that): > https://cwiki.apache.org/confluence/display/Hive/LanguageManual+Authorization > . > > The jira is HIVE-3705 <https://issues.apache.org/jira/browse/HIVE-3705>. > > – Lefty > > > > On Fri, May 10, 2013 at 8:24 AM, Owen O'Malley <omal...@apache.org> wrote: > >> Unfortunately, the roles in Hive are advisory only. Effectively everyone >> is an admin who can grant anyone (including themselves) additional >> permissions. >> >> If you need security, the best option is to protect the HDFS directories >> that the data is stored in. Set the HDFS owner, group, and permissions so >> that the users have read/write permission as desired. Don't forget to set >> things at both the database directory and table directory levels. >> >> Then you need to configure hive.security.metastore.authorization.manager >> with >> org.apache.hadoop.hive.ql.security.authorization.StorageBasedAuthorizationProvider, >> which uses HDFS permissions to control access to databases and tables. >> >> By setting it up this way, the HDFS permissions will be enforced by the >> NameNode and keep each group from reading each others data. The metastore >> will use the same HDFS permissions to prevent access to the other groups >> databases' metadata. >> >> Of course, all of this assumes you have Kerberos turned on for your >> Hadoop cluster. It also requires a minimum of Hive 0.10. >> >> Hope it helps, >> Owen >> >> >> On Fri, May 10, 2013 at 1:19 AM, Austin Chungath <austi...@gmail.com>wrote: >> >>> Hi all, >>> >>> This seems silly but I couldn't get any reliable information even after >>> a few minutes of googling. >>> If I am creating user roles and groups in hive, which user should I be >>> doing it with? >>> >>> Is there some configuration in hive-site.xml which sets a user as hive >>> admin? >>> >>> Right now I see that any user can create user roles and groups or am I >>> missing something? >>> >>> I am using the following link as reference >>> https://cwiki.apache.org/Hive/languagemanual-auth.html >>> >>> Thanks, >>> Austin >>> >> >> >
