Github user davies commented on a diff in the pull request:
https://github.com/apache/spark/pull/11210#discussion_r53839539
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/types/UserDefinedType.scala ---
@@ -74,7 +74,7 @@ abstract class UserDefinedType[UserType] extends DataType
with Serializable {
/**
* The default size of a value of the UserDefinedType is 4096 bytes.
*/
- override def defaultSize: Int = 4096
+ override def defaultSize: Int = sqlType.defaultSize
--- End diff --
The old value is bad guess, because we always materialize the rows as
sqlType, so should use that. Will remove the comment while merging.
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