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https://issues.apache.org/jira/browse/HIVE-12738?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15070338#comment-15070338
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Matt McCline commented on HIVE-12738:
-------------------------------------
Thanks for producing a better test case.
In a few minutes I'll post a new patch that stops validating or vectorizing
after a vectorized GROUP BY that outputs rows. It does make the major
assumption we don't have multiple table scans in vectorization and that we are
validating / vectorizing a single GROUP BY operator.
> subquery with NOT IN failing due to ClassCastException
> ------------------------------------------------------
>
> Key: HIVE-12738
> URL: https://issues.apache.org/jira/browse/HIVE-12738
> Project: Hive
> Issue Type: Bug
> Components: Hive
> Reporter: Matt McCline
> Assignee: Matt McCline
> Priority: Critical
> Attachments: HIVE-12738.01.patch, HIVE-12738.2.patch
>
>
> {code}
> create table student(
> name string,
> age int,
> gpa double)
> create table voter(
> name string,
> age int,
> registration string,
> contributions float)
> select *
> from student
> where not student.age in
> (select age from voter)
> order by age;
> {code}
> Fails in Tez -- Vectorized Reduce.
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