>> Thanks for reaching out to us. In order to update run_as_user in API 2.1, you need to change the job owner to the respective user defined in the access_control_list.
Thank you. Unfortunately, I am not trying to update the run_as_user, but I am trying to retrieve it.
Upon closer reading of the yaml for Jobs API 2.1, it looks like run_as_user for a job is available via 'get' (for an individual job), but is not returned as part of 'list'. So it appears the confusion is mine.
I would suggest that in the future, perhaps ownership/privilege information would be valuable as part of job list retrieval.
Thanks for the help!