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Super User
Super User

Issue: "Parallel loading of tables" not working after upgrade PBIRS to October 2020(2nd)


after upgrade Power BI Report Server to version October 2020 (2nd release), when function "Parallel loading of tables" (under options>data load) is turned off, this behaviour is not working.


In case when this function is turned off, PBIRS during refresh is still loading parallely. This problem is only on server (PBIRS) side (in Desktop Oct2020 it works well), and is independent on Enhanced Metadata format setting.


It is critical issue for me, because in this case is not maintaned order of loading of datasets (which can be important). And bigger problem, in cases of many datasouces are loaded parallely, it's makes huge load on source databases, which can lead to crash primary systems.


At this time I do not know any workaround to solve this issue.



Community Support
Community Support

Hi, @josef78 


It’s my pleasure to answer for you.

According to your description,How do you judge that this function is turned off, PBIRS during refresh is still loading parallely. If you change the setting, it should save the change to service.

And you can view the solved similar case:Solved: Disable parallel loading of tables in web publishe... - Microsoft Power BI Community Maybe it will help.


Best Regards

Janey Guo


If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.

Hi @v-janeyg-msft 

Thanks for response, but this issue is not related to cloud Power BI Service but to enterprise onpremise deployment (Power BI Report Server). Option MashupDefaultPoolContainerMaxCount is not present in PBI RS.


This issue still remains after applying last update of October 2020 version (published on january 2021)

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