Github user gatorsmile commented on a diff in the pull request:
https://github.com/apache/spark/pull/12962#discussion_r62416413
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/catalog/SessionCatalog.scala
---
@@ -118,6 +118,9 @@ class SessionCatalog(
}
def dropDatabase(db: String, ignoreIfNotExists: Boolean, cascade:
Boolean): Unit = {
+ if (db == "default") {
--- End diff --
You are asking a very great question! Actually, I am not very sure how it
works.
First, the current code base is not considering case sensitivity in
database names. That part is missing. I think we should call `toLowerCase` for
all the cases.
Second, I saw we have a function `formatTableName` for formatting table
names based on the configuration of `CASE_SENSITIVE`. However, the underlying
Hive metastore is not case sensitive. See the document:
https://cwiki.apache.org/confluence/display/Hive/LanguageManual+DDL
My question is how to achieve the case sensitivity when using Hive
metastore? also cc @yhuai
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