Forum Discussion
Why is fetching data so slow?
Hello I'm trying to develop a custom visual that needs a lot of data (about 500k rows). I know from the documentation that fetching data from PowerBI is limited to 30k rows, but you can fetch mo...
I've done some additional tests, and the thing that is even weirder is that the time required to fetch the next batch of rows using the fetchModerData() api seems completely unrelated to the amount of data that is retrieved. I've tried to set the dataViaMapping's window size to 3000 instead of 30000, and every fetch requires exactly the same time: about 20 seconds.
What is going on here? Is this an artificial limit imposed by PowerBI? Why is fetching data so absurdly slow??