amaliujia commented on code in PR #40164:
URL: https://github.com/apache/spark/pull/40164#discussion_r1117874054


##########
connector/connect/client/jvm/src/main/scala/org/apache/spark/sql/Dataset.scala:
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@@ -2461,6 +2461,60 @@ class Dataset[T] private[sql] (val session: 
SparkSession, private[sql] val plan:
     new DataFrameWriterV2[T](table, this)
   }
 
+  def unpersist(blocking: Boolean): this.type = {

Review Comment:
   Oh I now remember:
   
   `def persist(): this.type`
   `def persist(newLevel: StorageLevel): this.type`
   
   There is a StorageLevel class in the signature which is from the core 
module. Does Scala client now can reuse the core 's classes (IIUC scala client 
is aiming to get rid of core dependency eventually)?



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