Surbhi-Vijay opened a new issue, #11402:
URL: https://github.com/apache/incubator-gluten/issues/11402
### Backend
VL (Velox)
### Bug description
Decimal casting from floating point value is resulting in incorrect value.
` cast('100.12' as decimal(5, 1))`
Spark answer: `100.1`
Gluten answer: `10.0`
Same issue is happening with
Repro Testcase:
```
test("Incorrect decimal casting") {
withSQLConf(SQLConf.ANSI_ENABLED.key -> "false") {
withTable("dynparttest2") {
Seq[(Integer, Integer)](
(1, 1),
(1, 3),
(2, 3),
(3, 3),
(4, null),
(5, null)
).toDF("key", "value").createOrReplaceTempView("src")
// decimal
sql("create table dynparttest2 (value int) partitioned by (pdec
decimal(5, 1))")
sql(
"""
|insert into table dynparttest2 partition(pdec)
| select count(*), cast('100.12' as decimal(5, 1)) as pdec from
src
""".stripMargin)
checkAnswer(
sql("select * from dynparttest2"),
Seq(Row(6, new java.math.BigDecimal("100.1"))))
}
}
}
```
Test logs
```
Results do not match for query:
Timezone:
sun.util.calendar.ZoneInfo[id="America/Los_Angeles",offset=-28800000,dstSavings=3600000,useDaylight=true,transitions=185,lastRule=java.util.SimpleTimeZone[id=America/Los_Angeles,offset=-28800000,dstSavings=3600000,useDaylight=true,startYear=0,startMode=3,startMonth=2,startDay=8,startDayOfWeek=1,startTime=7200000,startTimeMode=0,endMode=3,endMonth=10,endDay=1,endDayOfWeek=1,endTime=7200000,endTimeMode=0]]
Timezone Env:
== Parsed Logical Plan ==
'Project [*]
+- 'UnresolvedRelation [dynparttest2], [], false
== Analyzed Logical Plan ==
value: int, pdec: decimal(5,1)
Project [value#80, pdec#81]
+- SubqueryAlias spark_catalog.default.dynparttest2
+- Relation spark_catalog.default.dynparttest2[value#80,pdec#81] parquet
== Optimized Logical Plan ==
Relation spark_catalog.default.dynparttest2[value#80,pdec#81] parquet
== Physical Plan ==
VeloxColumnarToRow
+- ^(1) FileFileSourceScanExecTransformer parquet
spark_catalog.default.dynparttest2[value#80,pdec#81] Batched: true,
DataFilters: [], Format: Parquet, Location: CatalogFileIndex(1
paths)[...../incubator-gluten/spark-warehouse/org.apa..., PartitionFilters: [],
PushedFilters: [], ReadSchema: struct<value:int> NativeFilters: []
== Results ==
== Results ==
!== Correct Answer - 1 == == Gluten Answer - 1 ==
struct<> struct<>
![6,100.1] [6,10.0]
```
### Gluten version
main branch
### Spark version
spark-4.0.x
### Spark configurations
_No response_
### System information
_No response_
### Relevant logs
```bash
```
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