j7nhai opened a new issue, #8716:
URL: https://github.com/apache/incubator-gluten/issues/8716
### Backend
VL (Velox)
### Bug description
This should throw exception if spark.sql.mapKeyDedupPolicy=EXCEPTION
(spark's default)
```sql
create table fun_map_src(k1 int, v1 int, k2 int, v2 int);
insert into fun_map_src values (1, 3, 1, 4);
select map(k1, v1, k2, v2) from fun_map_src;
```
However, when gluten enabled, the output is
```sql
> select map(k1, v1, k2, v2) from fun_map_src;
25/02/12 17:48:00 WARN WholeStageTransformer: WholeStageCodegenTransformer
(1) generating the substrait plan took: 7 ms.
I20250212 17:48:01.671165 386506 Task.cpp:2051] Terminating task
Gluten_Stage_0_TID_0_VTID_0 with state Finished after running for 25ms
{1:4}
```
(This look like LAST_WIN?)
> Note, You should select from the table, not the constant value such as
`select from Map(1, 3, 1, 4);`, because the in that way, the exception is from
the plan phase.
### Spark version
None
### Spark configurations
_No response_
### System information
_No response_
### Relevant logs
```bash
```
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