gaogaotiantian commented on code in PR #53462:
URL: https://github.com/apache/spark/pull/53462#discussion_r2653886258


##########
core/src/main/scala/org/apache/spark/api/python/PythonRunner.scala:
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@@ -214,7 +214,7 @@ private[spark] abstract class BasePythonRunner[IN, OUT](
   protected val hideTraceback: Boolean = false
   protected val simplifiedTraceback: Boolean = false
 
-  protected val runnerConf: Map[String, String] = Map.empty
+  protected def runnerConf: Map[String, String] = Map.empty

Review Comment:
   I tried `lazy val` and it still does not allow me to access through 
`super.runnerConf`.
   
   ```
   [error] 
/Users/tian.gao/programs/spark/sql/core/src/main/scala/org/apache/spark/sql/execution/python/streaming/TransformWithStateInPySparkPythonRunner.scala:242:11:
 super may not be used on lazy value runnerConf; super can only be used to 
select a member that is a method or type
   [error]     super.runnerConf ++ initialRunnerConf ++ Map(
   ```



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