After clicking the github spark repo, it is clearly here: https://github.com/apache/spark/tree/master/launcher/src/main/java/org/apache/spark/launcher
My intellij project sidebar was fully expanded and I was lost in anther folder. Problem solved. --------------------------------------------------------------------- To unsubscribe, e-mail: user-unsubscr...@spark.apache.org For additional commands, e-mail: user-h...@spark.apache.org