Hello We have some memory intensive flows These flows someti

Question

Hello We have some memory intensive flows These flows sometimes are triggered at the same time and executed through a LocalExecutor The LocalExecutor will immediately launch all flow runs and cause memory errors I wonder if there is a way to make LocalExecutor or any executor to execute one flow run at a time sequentially rather than launch all of flow runs at the same time

Kevin Kho · Answer

Hi Ling we have <https docs prefect io orchestration flow runs concurrency limits html flow run limits|Flow Run Concurrency Limits> for that

Ling Chen · Answer

Is there a way to do that with custom server then We are using both cloud and custom server for different use cases

Kevin Kho · Answer

This is not a Server feature for Prefect 1 0 but it is something 2 0 supports in the free version

Kevin Kho · Answer

You have to do it in the state handler with the GraphQL API calls and then if you find that there is more than 1 flow in the running state just use time sleep

Ling Chen · Answer

I see Good idea Thanks Looking forward to Prefect 2 0