[ 
https://issues.apache.org/jira/browse/HIVE-21409?focusedWorklogId=217061&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-217061
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ASF GitHub Bot logged work on HIVE-21409:
-----------------------------------------

                Author: ASF GitHub Bot
            Created on: 21/Mar/19 22:57
            Start Date: 21/Mar/19 22:57
    Worklog Time Spent: 10m 
      Work Description: shawnweeks commented on issue #575: HIVE-21409 Add Jars 
to Session Conf ClassLoader
URL: https://github.com/apache/hive/pull/575#issuecomment-475433844
 
 
   Closing this as this breaks Ranger. Will continue troubleshooting.
 
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Issue Time Tracking
-------------------

    Worklog Id:     (was: 217061)
    Time Spent: 0.5h  (was: 20m)

> Initial SessionState ClassLoader Reused For Subsequent Sessions
> ---------------------------------------------------------------
>
>                 Key: HIVE-21409
>                 URL: https://issues.apache.org/jira/browse/HIVE-21409
>             Project: Hive
>          Issue Type: Bug
>    Affects Versions: 1.2.1
>            Reporter: Shawn Weeks
>            Priority: Minor
>              Labels: pull-request-available
>         Attachments: create_class.sql, run.sql, setup.sql
>
>          Time Spent: 0.5h
>  Remaining Estimate: 0h
>
> It appears that the first ClassLoader attached to a SessionState Static 
> Instance is being reused as the parent for all future sessions. This causes 
> any libraries added to the class path on the initial session to be added to 
> future sessions. It also appears that further sessions may be adding jars to 
> this initial ClassLoader as well leading to the class path getting more and 
> more polluted. This occurring on a build including HIVE-11878. I've included 
> some examples that greatly exaggerate the problem.



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