Github user felixcheung commented on a diff in the pull request: https://github.com/apache/spark/pull/19805#discussion_r153080504 --- Diff: sql/core/src/main/scala/org/apache/spark/sql/Dataset.scala --- @@ -524,22 +524,41 @@ class Dataset[T] private[sql]( */ @Experimental @InterfaceStability.Evolving - def checkpoint(): Dataset[T] = checkpoint(eager = true) + def checkpoint(eager: Boolean = true): Dataset[T] = _checkpoint(eager = eager) --- End diff -- I think we should keep this signature - there's already a ` def checkpoint(eager: Boolean = true)`
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