Github user tedyu commented on a diff in the pull request:
https://github.com/apache/spark/pull/9940#discussion_r51213506
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/types/StructType.scala ---
@@ -359,6 +361,18 @@ object StructType extends AbstractDataType {
protected[sql] def fromAttributes(attributes: Seq[Attribute]):
StructType =
StructType(attributes.map(a => StructField(a.name, a.dataType,
a.nullable, a.metadata)))
+ def removeMetadata(key: String, dt: DataType): DataType =
+ dt match {
+ case StructType(fields) =>
+ val newFields = fields.map { f =>
+ val mb = new MetadataBuilder()
--- End diff --
If we add clear() to MetadataBuilder, this can be lifted above the
fields.map. Inside the map operation we just clear the MetadataBuilder.
What do you think ?
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