doki23 commented on code in PR #45181:
URL: https://github.com/apache/spark/pull/45181#discussion_r1513722604
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sql/core/src/main/scala/org/apache/spark/sql/Dataset.scala:
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@@ -3878,6 +3880,8 @@ class Dataset[T] private[sql](
*/
def persist(newLevel: StorageLevel): this.type = {
sparkSession.sharedState.cacheManager.cacheQuery(this, None, newLevel)
+ queryExecution = new QueryExecution(
Review Comment:
So when we judge whether it's necessary to renew a `queryExecutionPersisted`
instance, we always need transform down the whole queryExecution's logical plan
tree and lookup it's children in the `cacheManager`.
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