LuciferYang commented on code in PR #41559:
URL: https://github.com/apache/spark/pull/41559#discussion_r1227589806
##########
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/types/DataTypeUtils.scala:
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@@ -16,14 +16,36 @@
*/
package org.apache.spark.sql.catalyst.types
+import com.fasterxml.jackson.databind.annotation.{JsonDeserialize,
JsonSerialize}
+import org.json4s._
+import org.json4s.JsonAST.JValue
+import org.json4s.JsonDSL._
+
import org.apache.spark.sql.catalyst.analysis.Resolver
-import org.apache.spark.sql.catalyst.expressions.Cast
+import org.apache.spark.sql.catalyst.expressions.{Cast, Expression}
+import
org.apache.spark.sql.catalyst.util.DataTypeJsonUtils.{DataTypeJsonDeserializer,
DataTypeJsonSerializer}
import org.apache.spark.sql.internal.SQLConf
import org.apache.spark.sql.internal.SQLConf.StoreAssignmentPolicy
import org.apache.spark.sql.internal.SQLConf.StoreAssignmentPolicy.{ANSI,
STRICT}
import org.apache.spark.sql.types.{ArrayType, AtomicType, DataType, MapType,
NullType, StructType}
+@JsonSerialize(using = classOf[DataTypeJsonSerializer])
+@JsonDeserialize(using = classOf[DataTypeJsonDeserializer])
Review Comment:
I suggest moving these two annotations back to DataType and we can change
the following
https://github.com/apache/spark/blob/daee47a436473b865343301a78fef715d2780c4d/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/util/DataTypeJsonUtils.scala#L37
to `delegate.serialize(DataTypeUtils.jsonValue(value.typeName), gen,
provider)`
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