Scheduled Refresh During SSAS Refresh

Hi guys,

I have a SSAS tabular. Some of the partitions are refreshed on an hourly basis. The SSAS is used as a datasource for a Power BI report, refreshed throught the EGW 8 times per day.

There is a huge problem when the scheduled refresh runs simultaneoulsy with the refresh of the cube. When this happens, the refresh is reported as a successful one, however data in the Power BI report are not consistent , datasets contain partial information and the report is absolutely wrong and misleading.

I have tried to configure the schedules in a way to avoid such conflicts - for instance the cube refresh to be executed at 11:00 & 12:00 (the refresh takes 2-3 minutes) and the power bi refresh to run at 11:30 and 12:30. However the PowerBU refresh time schedule is not strict - the service runs the refresh procedures with some delays. And due to these delays the PowerBI refresh does not run at 11:30 as planned, but at 12:01 when the cube is being processed. The result is - incorrect figures in the report...

Has any one met such an issue and did you manage to resolve it?  

Thanks

Tsanka