A Dataproc job for running Apache SparkR
<https://spark.apache.org/docs/latest/sparkr.html>__ applications on
YARN.
.. attribute:: main_r_file_uri
Required. The HCFS URI of the main R file to use as the
driver. Must be a .R file.
Optional. HCFS URIs of files to be copied to the working
directory of R drivers and distributed tasks. Useful for
naively parallel tasks.
Optional. A mapping of property names to values, used to
configure SparkR. Properties that conflict with values set by
the Dataproc API may be overwritten. Can include properties
set in /etc/spark/conf/spark-defaults.conf and classes in user
code.
