[SPARK-32167] nullability of GetArrayStructFields is incorrect

• Type: Bug
• Status: Resolved
• Priority: Blocker
• Resolution: Fixed
• Affects Version/s: 1.6.3, 2.0.2, 2.1.3, 2.2.3, 2.3.4, 2.4.6, 3.0.0
• Fix Version/s: 2.4.7, 3.0.1, 3.1.0
• Component/s: SQL
• Labels: correctness
• Target Version/s: 2.4.7, 3.0.1
• Assignee: Wenchen Fan
• Reporter: Wenchen Fan
• Created: 03/Jul/20 08:21
• Updated: 08/Jul/20 20:32
• Resolved: 07/Jul/20 03:10

Description

The following should be `Array([WrappedArray(1, null)])` instead of `Array([WrappedArray(1, 0)])`

import scala.collection.JavaConverters._
import org.apache.spark.sql.Row
import org.apache.spark.sql.types.{ArrayType, StructType}

val innerStruct = new StructType().add("i", "int", nullable = true)
val schema = new StructType().add("arr", ArrayType(innerStruct, containsNull = false))
val df = spark.createDataFrame(List(Row(Seq(Row(1), Row(null)))).asJava, schema)
df.select($"arr".getField("i")).collect

 

Issue Links

• links to: [Github] Pull Request #28992 (cloud-fan)
• links to: [Github] Pull Request #29019 (cloud-fan)
• links to: [Github] Pull Request #29019 (cloud-fan)