Github user gatorsmile commented on a diff in the pull request:
https://github.com/apache/spark/pull/21410#discussion_r190790254
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/CatalystTypeConverters.scala
---
@@ -309,6 +322,9 @@ object CatalystTypeConverters {
case d: JavaBigDecimal => Decimal(d)
case d: JavaBigInteger => Decimal(d)
case d: Decimal => d
+ case other => throw new IllegalArgumentException(
+ s"The value (${other.toString}) of the type
(${other.getClass.getCanonicalName}) "
+ + s"cannot be converted to ${dataType.simpleString}")
--- End diff --
Let us use `catalogString` here?
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