okumin created HIVE-27950:
-----------------------------
Summary: 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
`STACK` 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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