[
https://issues.apache.org/jira/browse/SPARK-35267?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Ganesh Chand updated SPARK-35267:
---------------------------------
Description:
{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}
was:
{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}
> 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
> Priority: Major
>
> {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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