Github user mn-mikke commented on a diff in the pull request:
https://github.com/apache/spark/pull/21236#discussion_r207148777
--- Diff:
sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/expressions/ExpressionEvalHelper.scala
---
@@ -98,6 +98,9 @@ trait ExpressionEvalHelper extends
GeneratorDrivenPropertyChecks {
if (expected.isNaN) result.isNaN else expected == result
case (result: Float, expected: Float) =>
if (expected.isNaN) result.isNaN else expected == result
+ case (result: UnsafeRow, expected: GenericInternalRow) =>
--- End diff --
Hi @srowen,
```(InternalRow, InternalRow)``` case was introduced later in
[21838](https://github.com/apache/spark/pull/21838) and covers the logic of the
case with ```UnsafeRow```. So we can just remove the unreachable piece of code.
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