a list of indices of the parent partitions that will be assigned to this DataStream
and will
subsequently be serialized and sent through a single connection
An array of parent partitions to be mapped (through a NarrowDependency
to this DataStreamPartition
)
A partition corresponding to one
DataStream
a list of indices of the parent partitions that will be assigned to this
DataStream
and will subsequently be serialized and sent through a single connection