dusantism-db commented on code in PR #49445:
URL: https://github.com/apache/spark/pull/49445#discussion_r1925532381


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sql/catalyst/src/main/scala/org/apache/spark/sql/connector/catalog/CatalogManager.scala:
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@@ -49,6 +49,18 @@ class CatalogManager(
   // TODO: create a real SYSTEM catalog to host `TempVariableManager` under 
the SESSION namespace.
   val tempVariableManager: TempVariableManager = new TempVariableManager
 
+  // This field will be populated and cleaned up by SqlScriptingExecution.
+  private val sqlScriptingLocalVariableManager: 
InheritableThreadLocal[Option[VariableManager]] =

Review Comment:
   I agree that using ThreadLocal is error prone and explicitly passing the 
scripting state would be better. That being said I also agree with Wenchen in 
that implementing the state passing is quite a big/invasive change. I think 
implementing ThreadLocal for now, and in a separate PR following up with the 
proper implementation is the way to go.



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