andygrove opened a new issue, #15:
URL: https://github.com/apache/arrow-datafusion-comet/issues/15
```
scala> val inputs = Seq("123", "-123", "86374").toDF("n")
inputs: org.apache.spark.sql.DataFrame = [n: string]
scala> inputs.write.parquet("test.parquet")
24/02/13 07:40:14 INFO src/lib.rs: Comet native library initialized
scala> val df = spark.read.parquet("test.parquet")
df: org.apache.spark.sql.DataFrame = [n: string]
scala> import org.apache.spark.sql.types._
import org.apache.spark.sql.types._
scala> val df2 = df.withColumn("converted",
col("n").cast(DataTypes.ShortType))
df2: org.apache.spark.sql.DataFrame = [n: string, converted: smallint]
scala> df2.show
+-----+---------+
| n|converted|
+-----+---------+
|86374| 20838|
| -123| -123|
| 123| 123|
+-----+---------+
scala> spark.conf.set("spark.comet.enabled", false)
scala> df2.show
+-----+---------+
| n|converted|
+-----+---------+
|86374| null|
| -123| -123|
| 123| 123|
+-----+---------+
```
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