luocooong commented on issue #2296:
URL: https://github.com/apache/drill/issues/2296#issuecomment-901689722


   @Z0ltrix Thanks for the idea. As I understand it, need Drill to know who 
sent this request. Drill executes client requests as the user logged in to the 
client 
([Authentication](https://drill.apache.org/docs/securing-drill-introduction/) 
support the PAM and Kerberos if 
[Impersonation](https://drill.apache.org/docs/configuring-user-impersonation/) 
is configured). So, user can passes the query request (and the user 
credentials) to storage layer once successfully login in the drill use the PAM 
(or krb ?). But, neither PAM nor Kerberos may be a direct user on the 
application layer. In other words, both PAM and Kerberos are not flexible in 
setup.
   


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