Github user HyukjinKwon commented on a diff in the pull request:
https://github.com/apache/spark/pull/19805#discussion_r153178787
--- 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 --
No, it's going to break Java API compatibility. Default value does not work
with Java.
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