Github user ericl commented on a diff in the pull request:
https://github.com/apache/spark/pull/13537#discussion_r66197227
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/types/StructType.scala ---
@@ -293,8 +294,8 @@ case class StructType(fields: Array[StructField])
extends DataType with Seq[Stru
override def defaultSize: Int = fields.map(_.dataType.defaultSize).sum
override def simpleString: String = {
- val fieldTypes = fields.map(field =>
s"${field.name}:${field.dataType.simpleString}")
- s"struct<${fieldTypes.mkString(",")}>"
+ val fieldTypes = fields.map(field => s"${field.name}:
${field.dataType.simpleString}")
--- End diff --
TODO maybe this should use a SeqView to avoid eagerly calling toString() on
child fields.
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