Parts of it are indeed written in Java. You probably want to reach out to the developers list to talk about changing Spark.
On Sat, Nov 3, 2018, 11:42 AM Soheil Pourbafrani <[email protected] wrote: > Hi, I want to customize some part of Spark. I was wondering if there any > Spark source is written in Java language, or all the sources are in Scala > language? >
