Save statistics of each partition
The original intent of calling the Statistics
filter on a
PartitionedDataSet
was that the resulting PartitionedDataSet
would
have partitions matching the input giving the statics of each partition
(as well as the overall statistics in global fields). There is a comment
in the code that says as much.
However, the partitioned version of Execute
deleted the statistics.
This corrects the behavior by leaving in the partitions' statistics.
This is also now being tested.