Github user cloud-fan commented on a diff in the pull request:
https://github.com/apache/spark/pull/17015#discussion_r102360866
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/catalog/interface.scala
---
@@ -349,36 +350,42 @@ object CatalogTypes {
/**
- * An interface that is implemented by logical plans to return the
underlying catalog table.
- * If we can in the future consolidate SimpleCatalogRelation and
MetastoreRelation, we should
- * probably remove this interface.
+ * A [[LogicalPlan]] that represents a table.
*/
-trait CatalogRelation {
- def catalogTable: CatalogTable
- def output: Seq[Attribute]
-}
+case class CatalogRelation(
+ tableMeta: CatalogTable,
+ dataCols: Seq[Attribute],
+ partitionCols: Seq[Attribute]) extends LeafNode with
MultiInstanceRelation {
--- End diff --
yes, and at least we need a `Seq[Attribute]` as output.
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