Could you share your code to reproduce it ? Rex Fenley <r...@remind101.com> 于2020年10月15日周四 上午5:54写道：
> Hello, > > I've been playing with UDFs using the Scala API and have repeatedly run > into issues such as this: > ``` > flink-taskmanager_1 | java.lang.ClassCastException: > scala.collection.immutable.Set$EmptySet$ cannot be cast to [J > ``` > Is there something that can be done on Flink's end, either to catch these > errors in type checking or to cast them in a sane manner during runtime? > > Thanks! > > -- > > Rex Fenley | Software Engineer - Mobile and Backend > > > Remind.com <https://www.remind.com/> | BLOG <http://blog.remind.com/> | > FOLLOW US <https://twitter.com/remindhq> | LIKE US > <https://www.facebook.com/remindhq> > -- Best Regards Jeff Zhang
