yaooqinn commented on a change in pull request #30978:
URL: https://github.com/apache/spark/pull/30978#discussion_r550209533



##########
File path: 
sql/core/src/main/scala/org/apache/spark/sql/internal/SharedState.scala
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@@ -272,5 +260,19 @@ object SharedState extends Logging {
       sparkWarehouseDir
     }
     logInfo(s"Warehouse path is '$warehousePath'.")
+    val confClone = sparkConf.clone()

Review comment:
       
   > We can skip all these if `initialConfigs` is empty?
   
   A bit tricky, look we need to clone or not based `initialConfigs` 
   




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