Github user michalsenkyr commented on the issue: https://github.com/apache/spark/pull/16240 I would like to add that the conversion is specific to `List[_]`. I can add support for arbitrary sequence types through the use of `CanBuildFrom` if it is desirable. We can also support `Set`s in this way by serializing into arrays. See SPARK-17414
--- If your project is set up for it, you can reply to this email and have your reply appear on GitHub as well. If your project does not have this feature enabled and wishes so, or if the feature is enabled but not working, please contact infrastructure at infrastruct...@apache.org or file a JIRA ticket with INFRA. --- --------------------------------------------------------------------- To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org For additional commands, e-mail: reviews-h...@spark.apache.org