> sc <- spark_connect(master = "yarn-client", config = conf, version = '2.2.0')

Sys.setenv(SPARK_HOME="/usr/lib/spark")
options(rsparkling.sparklingwater.version = '2.0.3')
# Configure cluster (c3.4xlarge 30G 16core 320disk)
conf <- spark_config()
conf$'sparklyr.shell.executor-memory' <- "20g"
conf$'sparklyr.shell.driver-memory' <- "20g"
conf$spark.executor.cores <- 16
conf$spark.executor.memory <- "20G"
conf$spark.yarn.am.cores  <- 16
conf$spark.yarn.am.memory <- "20G"
conf$spark.executor.instances <- 8
conf$spark.dynamicAllocation.enabled <- "false"
conf$maximizeResourceAllocation <- "true"
conf$spark.default.parallelism <- 32
# Connect to cluster
sc <- spark_connect(master = "yarn-client", config = conf, version = '2.2.0') # error shows after executing this line

C:sparkspark-2.3.1-bin-hadoop2.7

C:sparkspark-2.3.1-bin-hadoop2.7