@Evolving
public interface Distribution
PartitionReader
outputs data for one
partition).
Note that this interface has nothing to do with the data ordering inside one
partition(the output records of a single PartitionReader
).
The instance of this interface is created and provided by Spark, then consumed by
Partitioning.satisfy(Distribution)
. This means data source developers don't need to
implement this interface, but need to catch as more concrete implementations of this interface
as possible in Partitioning.satisfy(Distribution)
.
Concrete implementations until now: