[jira] [Commented] (SPARK-9042) Spark SQL incompatibility with Apache Sentry

["Giovanni Lanzani (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SPARK-9042?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14716253#comment-14716253 ] 

Giovanni Lanzani commented on SPARK-9042:
-----------------------------------------

This is a broader issue and not just something that should be fixed for Sentry. In fact when creating new tables with Spark (through the HiveContext), properties like `hive.warehouse.subdir.inherit.perms` are not respected.

> Spark SQL incompatibility with Apache Sentry
> --------------------------------------------
>
>                 Key: SPARK-9042
>                 URL: https://issues.apache.org/jira/browse/SPARK-9042
>             Project: Spark
>          Issue Type: Bug
>          Components: SQL
>    Affects Versions: 1.2.0
>            Reporter: Nitin Kak
>
> Hive queries executed from Spark using HiveContext use CLI to create the query plan and then access the Hive table directories(under /user/hive/warehouse/) directly. This gives AccessContolException if Apache Sentry is installed:
> org.apache.hadoop.security.AccessControlException: Permission denied: user=kakn, access=READ_EXECUTE, inode="/user/hive/warehouse/mastering.db/sample_table":hive:hive:drwxrwx--t 
> With Apache Sentry, only "hive" user(created only for Sentry) has the permissions to access the hive warehouse directory. After Sentry installations all the queries are directed to HiveServer2 which translates the changes the invoking user to "hive" and then access the hive warehouse directory. However, HiveContext does not execute the query through HiveServer2 which is leading to the issue. Here is an example of executing hive query through HiveContext.
> val hqlContext = new HiveContext(sc) // Create context to run Hive queries 
> val pairRDD = hqlContext.sql(hql) // where hql is the string with hive query 



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