srowen commented on a change in pull request #23464: [SPARK-26383][Core] - NPE 
when use DataFrameReader.jdbc with wrong URL
URL: https://github.com/apache/spark/pull/23464#discussion_r245523067
 
 

 ##########
 File path: sql/core/src/test/scala/org/apache/spark/sql/jdbc/JDBCSuite.scala
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 @@ -45,6 +45,7 @@ class JDBCSuite extends QueryTest
 
   val url = "jdbc:h2:mem:testdb0"
   val urlWithUserAndPass = 
"jdbc:h2:mem:testdb0;user=testUser;password=testPass"
+  val wrongUrl = "jdbc:h2:mem:testdbx"
 
 Review comment:
   This is unused?

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