cloud-fan commented on a change in pull request #27560: [SPARK-30809][SQL]
Review and fix issues in SQL API docs
URL: https://github.com/apache/spark/pull/27560#discussion_r381930412
##########
File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/types/DataType.scala
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@@ -488,6 +488,8 @@ object DataType {
/**
* Jackson serializer for [[DataType]]. Internally this delegates to json4s
based serialization.
+ *
+ * @since 3.0.0
*/
class DataTypeJsonSerializer extends JsonSerializer[DataType] {
Review comment:
classes in the catalyst package are treated as private classes and we don't
really need to add the `private[sql]`
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