Github user srowen commented on a diff in the pull request:
https://github.com/apache/spark/pull/18645#discussion_r127611412
--- Diff: sql/core/src/main/scala/org/apache/spark/sql/Dataset.scala ---
@@ -2537,8 +2537,9 @@ class Dataset[T] private[sql](
* @group action
* @since 1.6.0
*/
- def foreachPartition(func: ForeachPartitionFunction[T]): Unit =
- foreachPartition(it => func.call(it.asJava))
+ def foreachPartition(func: ForeachPartitionFunction[T]): Unit = {
+ foreachPartition((it: Iterator[T]) => func.call(it.asJava))
--- End diff --
In cases like this I resolved the ambiguity by casting the argument,
instead of implementing an interface -- because in cases like this the
interface version exists just for Java support.
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