cloud-fan commented on a change in pull request #26127: [SPARK-29348][SQL] Add
observable Metrics for Streaming queries
URL: https://github.com/apache/spark/pull/26127#discussion_r352426526
##########
File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/types/DataType.scala
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@@ -475,3 +483,30 @@ object DataType {
}
}
}
+
+/**
+ * Jackson serializer for [[DataType]]. Internally this delegates to json4s
based serialization.
+ */
+class DataTypeJsonSerializer extends JsonSerializer[DataType] {
+ private val delegate = new JValueSerializer
+ override def serialize(
+ value: DataType,
Review comment:
nit: 4 space indentation
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