I'm trying to set the partitioning for a delta lake sink in Data Factory; as you can see in the attached screenshot there is only one option (Key partitioning) and I cannot select the field to use as key. Ideally, I would like to use a hash partitioning scheme with 10 partitions based on a specific field. We also tried to edit directly the dataflow script to specify the partitioning options but it doesn't seem to work.
Is the partitioning even supported by inline delta lake? If so, how can I use it? Are we missing something?