Github user zsxwing commented on a diff in the pull request:
https://github.com/apache/spark/pull/16826#discussion_r100194351
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/internal/SessionState.scala ---
@@ -65,12 +80,29 @@ private[sql] class SessionState(sparkSession:
SparkSession) {
hadoopConf
}
- lazy val experimentalMethods = new ExperimentalMethods
+ lazy val experimentalMethods: ExperimentalMethods = {
+ existingSessionState
+ .map(_.experimentalMethods.clone)
+ .getOrElse(new ExperimentalMethods)
+ }
/**
* Internal catalog for managing functions registered by the user.
*/
- lazy val functionRegistry: FunctionRegistry =
FunctionRegistry.builtin.copy()
+ lazy val functionRegistry: FunctionRegistry = {
--- End diff --
It's better to just add a `copy` method to `FunctionRegistry` to simplify
these codes.
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