Github user cloud-fan commented on a diff in the pull request:
https://github.com/apache/spark/pull/16891#discussion_r100863061
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/jdbc/JDBCOptions.scala
---
@@ -31,7 +31,12 @@ class JDBCOptions(
import JDBCOptions._
- def this(parameters: Map[String, String]) = this(new
CaseInsensitiveMap(parameters))
+ def this(params: Map[String, String]) = {
+ this(params match {
+ case cMap: CaseInsensitiveMap => cMap
+ case _ => new CaseInsensitiveMap(params)
--- End diff --
I think this is a general problem, let's create an `object
CaseInsensitiveMap` and put this logic there.
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