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Posted to issues@hive.apache.org by "ZhangQiDong (Jira)" <ji...@apache.org> on 2021/05/18 13:22:00 UTC
[jira] [Updated] (HIVE-25135) Vectorization: Wrong Results issues
in IF expressions about Two-level nested UDF
[ https://issues.apache.org/jira/browse/HIVE-25135?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
ZhangQiDong updated HIVE-25135:
-------------------------------
Description:
After set hive.vectorized.execution.enabled = true, if there are two levels nested UDF conversion fields in the IF expression, the result will be incorrect.
Test case：
create table if_orc (col string, col2 string) stored as orc;
insert into table if_orc values('1', 'abc'),('1', 'abc'),('2', 'def'),( '2', 'def');
set hive.vectorized.execution.enabled = true;
select if(col='2', col2, reverse(upper(col2))) from if_orc;
set hive.vectorized.execution.enabled = false;
Right Result：
+------+
| _c0 |
+------+
| CBA |
| CBA |
| def |
| def |
+------+
set hive.vectorized.execution.enabled = true;
Wrong result：
+------+
| _c0 |
+------+
| CBA |
| CBA |
| ABC |
| ABC |
+------+
was:
After set hive.vectorized.execution.enabled = true, if there are two levels nested UDF conversion fields in the IF expression, the result will be incorrect.
Test case：
create table if_orc (col string, col2 string) stored as orc;
insert into table if_orc values('1', 'abc'),('1', 'abc'),('2', 'def'),( '2', 'def');
set hive.vectorized.execution.enabled = true;
select if(col='2', col2, reverse(upper(col2))) from if_orc;
Hivesql：
select if(col='2', col2, reverse(lupper (col2))) from if_orc;
set hive.vectorized.execution.enabled = false;
Right Result：
+------+
| _c0 |
+------+
| CBA |
| CBA |
| def |
| def |
+------+
set hive.vectorized.execution.enabled = true;
Wrong result：
+------+
| _c0 |
+------+
| CBA |
| CBA |
| ABC |
| ABC |
+------+
> Vectorization: Wrong Results issues in IF expressions about Two-level nested UDF
> --------------------------------------------------------------------------------
>
> Key: HIVE-25135
> URL: https://issues.apache.org/jira/browse/HIVE-25135
> Project: Hive
> Issue Type: Bug
> Components: Vectorization
> Affects Versions: 3.1.0, 4.0.0
> Reporter: ZhangQiDong
> Priority: Major
>
> After set hive.vectorized.execution.enabled = true, if there are two levels nested UDF conversion fields in the IF expression, the result will be incorrect.
> Test case：
> create table if_orc (col string, col2 string) stored as orc;
> insert into table if_orc values('1', 'abc'),('1', 'abc'),('2', 'def'),( '2', 'def');
> set hive.vectorized.execution.enabled = true;
> select if(col='2', col2, reverse(upper(col2))) from if_orc;
> set hive.vectorized.execution.enabled = false;
> Right Result：
> +------+
> | _c0 |
> +------+
> | CBA |
> | CBA |
> | def |
> | def |
> +------+
> set hive.vectorized.execution.enabled = true;
> Wrong result：
> +------+
> | _c0 |
> +------+
> | CBA |
> | CBA |
> | ABC |
> | ABC |
> +------+
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