Github user mgaido91 commented on a diff in the pull request:
https://github.com/apache/spark/pull/22315#discussion_r214532578
--- Diff:
sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/expressions/CollectionExpressionsSuite.scala
---
@@ -383,10 +383,13 @@ class CollectionExpressionsSuite extends
SparkFunSuite with ExpressionEvalHelper
val a3 = Literal.create(null, ArrayType(StringType))
val a4 = Literal.create(Seq(create_row(1)), ArrayType(StructType(Seq(
StructField("a", IntegerType, true)))))
+ // Explicitly mark the array type not nullable (spark-xxxxx)
--- End diff --
nit: `spark-xxxxx`?
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