What, if anything, controls which server in a PBIRS scale out performs the refresh?
I have 3 servers. One is a Back End server where SQL is installed and contains on premise Power BI Report Server Database. The Back End also has the Reporting Services service installed and is configured to do data model refreshes for reports and dashboards.. The other 2 are Front End servers with only the Reporting Service Service installed and both are doing refreshes of data models for reports and dashboards. These 2 servers point to the database on the Back End server.
In the Reporting Services Configuration Manager on each server the scale out section contains all 3 servers.
What/how is it decided which of the 3 servers will perform the data model refresh?