Github user yhuai commented on a diff in the pull request:
https://github.com/apache/spark/pull/14897#discussion_r80396050
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/internal/SharedState.scala ---
@@ -37,6 +37,20 @@ import org.apache.spark.util.{MutableURLClassLoader,
Utils}
*/
private[sql] class SharedState(val sparkContext: SparkContext) extends
Logging {
+ // System preserved database should not exists in metastore. However
it's hard to guarantee it
+ // for every session, because case-sensitivity differs. Here we always
lowercase it to make our
+ // life easier.
+ val globalTempDB =
sparkContext.conf.get(GLOBAL_TEMP_DATABASE).toLowerCase
--- End diff --
btw, do we check if there is an existing db having the same name as
`GLOBAL_TEMP_DATABASE`?
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