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https://issues.apache.org/jira/browse/HIVE-12738?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15070080#comment-15070080
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Gunther Hagleitner commented on HIVE-12738:
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The fix assumes that there are two parents... This could be an n-way join. In
general, isn't there a more robust way to fix this? There are other ways of
having multi parents.
I see two fixes: One where the function just searches all branches, probably
depth first. The other where we avoid backtracking and just terminate the walk
when we find a vectorized reduce that produces rows. That should be sufficient
no?
> 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
>
>
> {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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