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https://issues.apache.org/jira/browse/HIVE-27950?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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okumin updated HIVE-27950:
--------------------------
Status: Patch Available (was: Open)
> STACK UDTF returns wrong results when # of argument is not a multiple of N
> --------------------------------------------------------------------------
>
> Key: HIVE-27950
> URL: https://issues.apache.org/jira/browse/HIVE-27950
> Project: Hive
> Issue Type: Bug
> Reporter: okumin
> Assignee: okumin
> Priority: Major
> Labels: pull-request-available
>
> GenericUDTFStack nullifies a wrong cell when the number of values is
> indivisible. In the following case, the `col2` column of the last row should
> be `NULL`. But, `col1` is NULL somehow.
> {code:java}
> 0: jdbc:hive2://hive-hiveserver2:10000/defaul> select stack(2, 'a', 'b', 'c',
> 'd', 'e');
> +-------+-------+-------+
> | col0 | col1 | col2 |
> +-------+-------+-------+
> | a | b | c |
> | d | NULL | c |
> +-------+-------+-------+{code}
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