[jira] [Created] (SPARK-35267) nullable field is set to false for integer type when using reflection to get StructType for a case class

["Ganesh Chand (Jira)" <ji...@apache.org>]

Ganesh Chand created SPARK-35267:
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             Summary: nullable field is set to false for integer type when using reflection to get StructType for a case class
                 Key: SPARK-35267
                 URL: https://issues.apache.org/jira/browse/SPARK-35267
             Project: Spark
          Issue Type: Bug
          Components: SQL
    Affects Versions: 3.1.1
         Environment: Scala version: 2.12.13

sparkVersion = "3.1.1"
            Reporter: Ganesh Chand


{code:java}
// code placeholder

object Util {
def toStructType[T](implicit typeTags: ScalaReflection.universe.TypeTag[T]): StructType =
  ScalaReflection.schemaFor[T].dataType.asInstanceOf[StructType]
}

case class MyTable(val a: Int, val b: String)

// The following test fails because schema returned using reflection sets nullable=false for integer column. The test passes if you set it to false

it must "return a Spark Schema of type StructType for a case class" in {
 val schemaFromCaseClass: StructType = Util.toStructType[MyTable]
 val expectedSchema = new StructType().add(StructField("a", IntegerType, true)).add(StructField("b", StringType, true))
 schemaFromCaseClass.size mustBe 2
 schemaFromCaseClass mustBe expectedSchema
}




{code}



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