[jira] [Work logged] (HIVE-24233) except subquery throws nullpointer with cbo disabled

["ASF GitHub Bot (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HIVE-24233?focusedWorklogId=495752&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-495752 ]

ASF GitHub Bot logged work on HIVE-24233:
-----------------------------------------

                Author: ASF GitHub Bot
            Created on: 06/Oct/20 07:17
            Start Date: 06/Oct/20 07:17
    Worklog Time Spent: 10m 
      Work Description: pvargacl opened a new pull request #1555:
URL: https://github.com/apache/hive/pull/1555


   
   ### What changes were proposed in this pull request?
   Throw semanticException for except when cbo is disabled
   
   ### Why are the changes needed?
   
   
   ### Does this PR introduce _any_ user-facing change?
   No
   
   
   ### How was this patch tested?
   negative q test
   


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Issue Time Tracking
-------------------

            Worklog Id:     (was: 495752)
    Remaining Estimate: 0h
            Time Spent: 10m

> except subquery throws nullpointer with cbo disabled
> ----------------------------------------------------
>
>                 Key: HIVE-24233
>                 URL: https://issues.apache.org/jira/browse/HIVE-24233
>             Project: Hive
>          Issue Type: Bug
>            Reporter: Peter Varga
>            Assignee: Peter Varga
>            Priority: Major
>              Labels: pull-request-available
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> Except and intersect was only implemented with Calcite in HIVE-12764. If cbo is disabled it would just throw a nullpointer exception. We should at least throw a SemanticException stating this is not supported.
> Repro:
> set hive.cbo.enable=false;
> create table test(id int);
> insert into table test values(1);
> select id from test except select id from test;



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