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From "Todd Lipcon (JIRA)" <>
Subject [jira] Commented: (HIVE-78) Authorization infrastructure for Hive
Date Fri, 22 Oct 2010 00:51:19 GMT


Todd Lipcon commented on HIVE-78:

I'm a little unclear on how the user identity is passed down to the MR layer. Carl and I had
chatted about this a few weeks back -- is the idea now that all hive queries will run MR jobs
as a "hive" user, rather than "todd"? If so, we need to add authorization control for UDFs
and TRANSFORM as well, since a user could trivially take over the "hive" user credentials
from within a UDF. If the MR jobs will continue to run as "todd", then I don't understand
how we can apply any permissions model that is any different than HDFS permissions. More restrictive
is impossible because I can just read the files myself, and less restrictive is impossible
because HDFS is applying permissions based on the "todd" identity.

> Authorization infrastructure for Hive
> -------------------------------------
>                 Key: HIVE-78
>                 URL:
>             Project: Hive
>          Issue Type: New Feature
>          Components: Server Infrastructure
>            Reporter: Ashish Thusoo
>            Assignee: He Yongqiang
>         Attachments: createuser-v1.patch, hive-78-metadata-v1.patch, hive-78-syntax-v1.patch,
> Allow hive to integrate with existing user repositories for authentication and authorization

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