Hi Kyle,
Hi Janek, I think this is a known issue: https://issues.apache.org/jira/browse/BEAM-11212
Yes, that does indeed seem to be the same or at least a similar issue. I was looking, but I didn't find that report earlier, the Jira search bar is terrible.
Another thing I couldn't and still cannot find, however, is my metrics in the accumulators tab. On the finished stages, there are two sub tabs for vertex and SubTask accumulators with wild JSON dumps apparently containing several Beam system metrics, but not my custom metrics. On the still running stages, there's nothing at all.
Finally, yet another thing that is missing is the programming guide for Metrics: https://beam.apache.org/documentation/programming-guide/#using-metrics There it says: "Below, there is a simple example of how to use a Counter metric in a user pipeline." and then there is nothing.
Janek
