sparkling.conf
app-name
(app-name conf name)
get
(get conf key)
(get conf key default)
master
(master conf)
(master conf master)
set
(set conf key val)
(set conf amap)
set-executor-env
(set-executor-env conf key val)
(set-executor-env conf amap)
set-if-missing
(set-if-missing conf key val)
spark-home
(spark-home conf home)
to-string
(to-string conf)