[jira] [Commented] (DRILL-5875) user mixed up problem in apache drill

["Volodymyr Tkach (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/DRILL-5875?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16251402#comment-16251402 ] 

Volodymyr Tkach commented on DRILL-5875:
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[~flyfantasy] I tried to reproduce your case by configuring impersonation with 3 hops, then created 3 levels of views, and then send thousands of request from 2 users in parallel from sqlline scripts. Each of two users queried their own view on the third hop level, but in the first hop level they were using the same view which didn't belong to any of them. Didn't get any errors;
Can you please describe the steps to reproduce the bug, and also post the detailed log. 

> user mixed up problem in apache drill
> -------------------------------------
>
>                 Key: DRILL-5875
>                 URL: https://issues.apache.org/jira/browse/DRILL-5875
>             Project: Apache Drill
>          Issue Type: Bug
>    Affects Versions: 1.8.0, 1.9.0, 1.10.0, 1.11.0
>            Reporter: flyfantasy
>            Assignee: Arina Ielchiieva
>
> Hi guys.
> we have used drill for quite a long time.   We used apache-drill-1.8.0 at the beginning and recently we upgraded to apache-drill-1.11.0. Drill is great and now drill already have 40+ user in our company. It accelerate olap queries quite a lot. But as the number of  drill user is getting bigger and bigger, a problem we called user mix-up is getting more and more serious. 
> Let me explain the problem. We are using drill with user impersonation. Different user have different privileges. As we have many drill user, so is it quite common two or more people are using drill at the same time. A user we called u1 posted a query to table t1 located in hdfs which he has privilege through drill and may get an error which tells him that he has no privilege to the table as he was u2 ( another user). " And u2 may get a similar error with his query. The only thing u1 can do in this situation is to exit drill and reconnect to drill through a new session.
> This problem occurs quite frequently.  It occur in apache-drill-1.8.0 and also in apache-drill-1.11.0. User get confused and maybe frustrated while data security is under threaten. 
> PS: we are running drill on a 8 nodes cluster which will connect to a 100 nodes hadoop cluster. Hadoop version is 2.6.3. Drill version is 1.11.0. Below is drill-override.conf
> drill.exec: {
>   cluster-id: "olap-drill",
>   zk.connect: "zk01:2181/olap_drill,zk02:2181/olap_drill,zk03:2181/olap_drill",
>        security.user.auth: {            enabled: true,
>             packages += "org.apache.drill.exec.rpc.user.security",
>             impl: "pam"
>             pam_profiles: ["login", "sudo"]
>        },
>            impersonation: {
>              enabled: true,
>              max_chained_user_hops: 3
>            }
> }
> Thanks for your attention. 



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