I am trying to write a process that will programmatically update the “run_as_user_name” parameter for all jobs in an Azure Databricks workspace, using powershell to interact with the Jobs API. 

I have been trying to do this with a test job without success. I am, however, able to update different job params, such as job name, for the same job using powershell. This leads me to believe that its not possible to update run_as_user_name via the Jobs api, although I can't find this clearly stated anywhere in documentation. 

I’ve tried with both the 2.0 and 2.1 versions of the API. The below powershell works successfully for updating the job name:

#set BaseUrl and headers

$BaseUrl = https://adb-***.azuredatabricks.net

$job_URL = "$BaseUrl/api/2.0/jobs/update"

$headers = New-Object "System.Collections.Generic.Dictionary[[String],[String]]"

$headers.Add("Authorization", "Bearer XXXX")

#create the json for update

$JobId = '12345'

$paramDetail = '"new_settings": { "name": "change_to_this"}}'

$jobIdDetail = '"job_id":{0}' -f $JobId

$bodyContent = '{' + '{0},{1}' -f $jobIdDetail, $paramDetail + '}'

$bodyContent

#run the update

Invoke-RestMethod $job_URL -Method POST -Headers $headers -Body $bodyContent

However, if I change the following line:

• From: $paramDetail = '"new_settings": { "name": "change_to_this"}}'
• To: $paramDetail = '"new_settings": { "run_as_user_name": “my.user@company.com”}}'

I get no errors (in fact, I get no output at all), but nothing updates in the job within Databricks. Any thoughts on where I'm going wrong?