Github user gatorsmile commented on a diff in the pull request:
https://github.com/apache/spark/pull/18440#discussion_r124455418
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/catalog/interface.scala
---
@@ -403,13 +404,11 @@ object CatalogTypes {
/**
* A [[LogicalPlan]] that represents a table.
*/
-case class CatalogRelation(
+case class CatalogRelation private(
tableMeta: CatalogTable,
dataCols: Seq[AttributeReference],
partitionCols: Seq[AttributeReference]) extends LeafNode with
MultiInstanceRelation {
assert(tableMeta.identifier.database.isDefined)
- assert(tableMeta.partitionSchema.sameType(partitionCols.toStructType))
- assert(tableMeta.dataSchema.sameType(dataCols.toStructType))
--- End diff --
But users might still be able to call the constructor of `CatalogRelation`,
which is `case class` instead of `class`
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