davidm-db commented on code in PR #49445:
URL: https://github.com/apache/spark/pull/49445#discussion_r1924312921


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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:
   not sure if there are similar examples, but if we went with `SessionState` I 
would say we can set/update the context/var manager before the script starts 
execution and clean it afterwards?
   the same problem remains there as well, either we use a `ThreadLocal` or a 
map of contexts (scriptId -> context).



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