In `DataFramePartitioner.DataFrameFunctions.repartitionByRecordCount` use max instead of average to decide about partitoing

[benedeki]

Background

In DataFramePartitioner.DataFrameFunctions.repartitionByRecordCount the limit is compared against the average of records per partition. That can be under the limit while some partitions are still over the limit.

Feature

Change the method to decide about portioning based on the max of record counts per partition if to do or not the repartitioing.
Or make this parametrized or a dedicated method.