Github user cloud-fan commented on a diff in the pull request:
https://github.com/apache/spark/pull/19730#discussion_r151723565
--- Diff:
sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/expressions/CastSuite.scala
---
@@ -827,4 +827,34 @@ class CastSuite extends SparkFunSuite with
ExpressionEvalHelper {
checkEvaluation(cast(Literal.create(input, from), to), input)
}
+
+ test("SPARK-22500: cast for struct should not generate codes beyond
64KB") {
+ val N = 1000
+
+ val from1 = new StructType(
+ (1 to N).map(i => StructField(s"s$i", StringType)).toArray)
+ val to1 = new StructType(
+ (1 to N).map(i => StructField(s"i$i", IntegerType)).toArray)
+ val input1 = Row.fromSeq((1 to N).map(i => i.toString))
+ val output1 = Row.fromSeq((1 to N))
+ checkEvaluation(cast(Literal.create(input1, from1), to1), output1)
+
+ val from2 = new StructType(
+ (1 to N).map(i => StructField(s"a$i", ArrayType(StringType,
containsNull = false))).toArray)
--- End diff --
or just test this case.
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