Things on this page are fragmentary and immature notes/thoughts of the author. Please read with your own judgement!

1. Methods of a Kotlin object can be called in a Scala project by KotlinObject.INSTANCE.methodToCall()

2. You might need to provide the Kotlin standard library kotlin-stdlib.jar in order to run the compiled JAR. One way to avoid this is to compile a fat/uber JAR that contains all dependencies (including kotlin-stdlib.jar).

. Use Kotlin in Spark/Scala

http://tomstechnicalblog.blogspot.com/2016/11/using-kotlin-language-with-spark.html?m=1

https://thegmariottiblog.blogspot.com/2017/05/lets-make-apache-spark-more-kotlinesque.html