Github user cloud-fan commented on a diff in the pull request:
https://github.com/apache/spark/pull/15054#discussion_r79528505
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/catalog/SessionCatalog.scala
---
@@ -357,6 +346,21 @@ class SessionCatalog(
tempTables.remove(formatTableName(name))
}
+ /**
+ * Retrieve the metadata of an existing temporary view.
+ * If the temporary view does not exist, return None.
+ */
+ def getTempViewMetadataOption(name: String): Option[CatalogTable] =
synchronized {
--- End diff --
Seems we always use it with the pattern
`getTempViewMetadataOption.getOrElse(getTableMetadata)`, maybe we should just
rename it to `getTempViewOrPermanentTableMetadata`?
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