Github user JoshRosen commented on a diff in the pull request:
https://github.com/apache/spark/pull/7682#discussion_r35615980
--- Diff:
sql/catalyst/src/main/java/org/apache/spark/sql/catalyst/expressions/UnsafeRow.java
---
@@ -236,6 +236,41 @@ public Object get(int ordinal) {
}
@Override
+ public Object get(int ordinal, DataType dataType) {
+ if (dataType instanceof NullType) {
--- End diff --
I found a bug here: we should also check whether the row
`isNullAt(ordinal)`, in which case we should return `null`.
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