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https://issues.apache.org/jira/browse/HIVE-21019?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16713796#comment-16713796
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Yongzhi Chen commented on HIVE-21019:
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[~vgarg], turn off because the test is always tested the case when the
optimization is off before, just recent changes of
https://issues.apache.org/jira/browse/HIVE-20703 . makes the optimization can
be turn on in default setup. Turn off it explicitly just do not want to lose
the test scenario. You can add more test when fix HIVE-16100 to test the case
when the optimization is on.
> Fix autoColumnStats tests to make auto stats gather possible.
> -------------------------------------------------------------
>
> Key: HIVE-21019
> URL: https://issues.apache.org/jira/browse/HIVE-21019
> Project: Hive
> Issue Type: Bug
> Components: Test
> Affects Versions: 4.0.0
> Reporter: Yongzhi Chen
> Assignee: Yongzhi Chen
> Priority: Major
> Attachments: HIVE-21019.1.patch
>
>
> Before https://issues.apache.org/jira/browse/HIVE-20915 , the optimizer sort
> dynamic partitions is turn off for these tests. So these test can have group
> by in the query plan which can trigger compute statistics. After the jira,
> the optimizer is enabled, because of a a known bug with dynamic sorted
> partition optimization (HIVE-16100), the computer statistics does not happen.
> Fix the tests to disable the optimizer to test the same code path as before.
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