Spark, Spark Core, Rdd, Spark Api.
TaskContext): Iterator[T] def getPartitions: Array[Partition] def getDependencies: Seq[Dependency[_]] def getPreferredLocations(split: Partition): Seq[String] = Nil val partitioner: Option[Partitioner] = None } List of parent RDD’s that are the dependencies of the RDD. An array of partitions that a