Github user viirya commented on a diff in the pull request:
https://github.com/apache/spark/pull/10916#discussion_r51073506
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/Catalog.scala
---
@@ -46,6 +46,10 @@ trait Catalog {
def lookupRelation(tableIdent: TableIdentifier, alias: Option[String] =
None): LogicalPlan
+ def setCurrentDatabase(databaseName: String): Unit = {
+ throw new UnsupportedOperationException
--- End diff --
I think not all catalog support database concept. So, inherited catalog can
choose to implement it or not.
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