KryoRegistrator
serializer
KryoSerializer
serializer
kClassTag
JavaHadoopRDD
JavaNewHadoopRDD
JavaPairRDD
keyBy
JavaRDDLike
RDD
keyOrdering
ShuffleDependency
keys
JavaPairRDD
PairRDDFunctions
killExecutor
SparkContext
killExecutors
SparkContext