Bring your towel and join one of the fastest growing data communities. Welcome to our second-generation open source orchestration platform, a completely rethought approach to dataflow automation.

Prefect Community

Screen Shot 2024-09-05 at 6.16.32 PM.png

Hi,all
After upgrading of Prefect 2 to 3, "run-graph" always say "This flow run did not generate any task or subflow runs" at a "Runs" pane with Deployment on Kubernetes Worker. Somehow but when I execute same flow at other workload, it works. why?

woker "run-graph" show: Local Execution.
does not show: Kubernetes Worker

Screen Shot 2024-09-05 at 6.21.34 PM.png

Hey <@U072ME8ENHM> - this could be a few things; we've gotten some similar reports that we're working on here: <https://github.com/PrefectHQ/prefect/issues/15153>, so you might start by reading that thread and seeing what applies to your situation.  Given that you have a workflow that works fine on some workers but not others, I'm guessing this is an issue with websockets not connecting properly

Thank you <@UKNSNMUE6> .

I' ll check that!

Thank you <@UKNSNMUE6>

as you said,
I got same ERROR of the issue.

20:00:03.634 | *ERROR*  | GlobalEventLoopThread | prefect._internal.concurrency - Service 'EventsWorker' failed with 10 pending items.

and I figure that the error not occur if I ran flow at kubernetes worker in same kubernetes prefect server.

So it seems to be a connectivity issue of my machines between worker and server.

(There is an SSL accelerator and I put custom environment variable PREFECT_API_TLS_INSECURE_SKIP_VERIFY)

Thank you

feel free to open a new issue on GitHub if you want to investigate deeper there, or if you figure out the root cause!