If I add ownership using https://datahubproject.io/docs/metadata-ingestion/#simple_add_dataset_ownership will it replace owners in datahub? glue is containing hadoop as owner for some datasets. I would like to remove that during ingestion somehow.

The add_dataset_ownership transformer will only add owners, but it won’t remove any owners that were produced by the ingestion source. Once you’ve built a transformer that modifies the ownership aspect however you’d like, sending that to datahub will replace the list of owners that was previously there