Github user cloud-fan commented on a diff in the pull request:
https://github.com/apache/spark/pull/13008#discussion_r62964694
--- Diff: sql/core/src/test/scala/org/apache/spark/sql/DatasetSuite.scala
---
@@ -505,7 +505,7 @@ class DatasetSuite extends QueryTest with
SharedSQLContext {
val schema = StructType(Seq(
StructField("f", StructType(Seq(
StructField("a", StringType, nullable = true),
- StructField("b", IntegerType, nullable = false)
+ StructField("b", IntegerType, nullable = true)
--- End diff --
With the new null check, we will trigger error earlier than this test
expected. This test is testing the `AssertNotNull` expression, which is used
for converting nullable column to not-nullable object field(like primitive int).
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