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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (DRILL-4281) Drill should support inbound impersonation
Date Fri, 04 Mar 2016 15:24:40 GMT

    [ https://issues.apache.org/jira/browse/DRILL-4281?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15180009#comment-15180009
] 

ASF GitHub Bot commented on DRILL-4281:
---------------------------------------

Github user kbotzum commented on the pull request:

    https://github.com/apache/drill/pull/400#issuecomment-192320077
  
    One suggestion. The terms I use when discussing the concepts with customers are Drill
inbound impersonation and Drill outbound impersonation. That is absolutely clear. It does
imply implementation to a bit but I think makes intent very clear.  You can then derive other
terms from that such as "can_impersonate_inbound" and "principals_authorized_for_inbound_impersonation."
Yea, really wording but very clear. We can of course shorten to "princ_auth_inbound_imper"
in code.
    
    Would that make sense?
    
    By the way the use of the termed chained in the context of security usually implied something
like chained delegation which makes me think of a security identity that is both end to end
secure like kerberos and includes all identities that were passed through. That's not this
so I'd avoid use of the term chained.


> Drill should support inbound impersonation
> ------------------------------------------
>
>                 Key: DRILL-4281
>                 URL: https://issues.apache.org/jira/browse/DRILL-4281
>             Project: Apache Drill
>          Issue Type: Improvement
>            Reporter: Keys Botzum
>            Assignee: Sudheesh Katkam
>              Labels: doc-impacting, security
>
> Today Drill supports impersonation *to* external sources. For example I can authenticate
to Drill as myself and then Drill will access HDFS using impersonation
> In many scenarios we also need impersonation to Drill. For example I might use some front
end tool (such as Tableau) and authenticate to it as myself. That tool (server version) then
needs to access Drill to perform queries and I want those queries to run as myself, not as
the Tableau user. While in theory the intermediate tool could store the userid & password
for every user to the Drill this isn't a scalable or very secure solution.
> Note that HS2 today does support inbound impersonation as described here:  https://issues.apache.org/jira/browse/HIVE-5155

> The above is not the best approach as it is tied to the connection object which is very
coarse grained and potentially expensive. It would be better if there was a call on the ODBC/JDBC
driver to switch the identity on a existing connection. Most modern SQL databases (Oracle,
DB2) support such function.



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