Github user tdas commented on a diff in the pull request:
https://github.com/apache/spark/pull/16826#discussion_r103061676
--- Diff:
sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/catalog/SessionCatalogSuite.scala
---
@@ -1196,4 +1198,28 @@ class SessionCatalogSuite extends PlanTest {
catalog.listFunctions("unknown_db", "func*")
}
}
+
+ test("copy SessionCatalog") {
+ val externalCatalog = newEmptyCatalog()
+ val original = new SessionCatalog(externalCatalog)
+ val tempTable1 = Range(1, 10, 1, 10)
+ original.createTempView("copytest1", tempTable1, overrideIfExists =
false)
+
+ // check if tables copied over
+ val clone = original.clone(
+ SimpleCatalystConf(caseSensitiveAnalysis = true),
+ new Configuration(),
+ new SimpleFunctionRegistry,
+ CatalystSqlParser)
+ assert(original ne clone)
+ assert(clone.getTempView("copytest1") == Option(tempTable1))
+
+ // check if clone and original independent
+ clone.dropTable(TableIdentifier("copytest1"), ignoreIfNotExists =
false, purge = false)
+ assert(original.getTempView("copytest1") == Option(tempTable1))
+
+ val tempTable2 = Range(1, 20, 2, 10)
--- End diff --
should also test that `currentDb` get copied over and is independent.
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