Hi, I have a job with parallelism=8. I had some performance issues and I increased the parallelism . It was ok till 10 but when I set it to 12 or something bigger I noticed that, no performance metric such as busy,backpressure or idle metrics are working on Flink UI.
If I set parallelism, after waiting 1-2 minutes, I can see these metrics and colors which shows the busy/backpressure statuses on Flink UI also appears. But if I set parallelism=16, I can never see this metrics and colors. I think a task in the job locks everything but I couldn`t understand the relationship between parallelism and metrics/lock. I run on a server with 16 CPU, 64GB Ram. Any help is appreciated. Thanks
