scala source files, compile them
into a Java Archive (jar).
spark_compile(jar_name, spark_home = NULL, filter = NULL, scalac = NULL, jar = NULL)scala
files during compilation. This can be used to ensure that e.g. certain files
are only compiled with certain versions of Spark, and so on.scalac program to be used, for
compilation of scala files.jar program to be used, for
generating of the resulting jar.jar.