Github user cloud-fan commented on the issue: https://github.com/apache/spark/pull/16161 option 1 is better, but this PR only adds the support for `scala.collection.immutable.Map`, with a very specific way: we can't extend it to support `scala.collection.mutable.Map` or `List`. I think we need a general solution to support custom collection type.
--- 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