Github user viirya commented on a diff in the pull request: https://github.com/apache/spark/pull/19567#discussion_r147305034 --- Diff: sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/jdbc/JdbcUtils.scala --- @@ -456,8 +456,17 @@ object JdbcUtils extends Logging { case StringType => (array: Object) => - array.asInstanceOf[Array[java.lang.String]] - .map(UTF8String.fromString) + array match { + case _: Array[java.lang.String] => + array.asInstanceOf[Array[java.lang.String]] + .map(UTF8String.fromString) + case _: Array[java.util.UUID] => + array.asInstanceOf[Array[java.util.UUID]] --- End diff -- Can this also be covered by the following `Array[java.lang.Object]`?
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