the parent RDD
the start of the range in the parent RDD
the start of the range in the child RDD
the length of the range
Get the parent partitions for a child partition.
Get the parent partitions for a child partition.
a partition of the child RDD
the partitions of the parent RDD that the child partition depends upon
Represents a one-to-one dependency between ranges of partitions in the parent and child RDDs.