Re: scaling issue Running Flink on Kubernetes

2020-03-11 文章 Eleanore Jin
Hi Flavio, We have implemented our own flink operator, the operator will start a flink job cluster (the application jar is already packaged together with flink in the docker image). I believe Google's flink operator will start a session cluster, and user can submit the flink job via REST. Not

Re: scaling issue Running Flink on Kubernetes

2020-03-10 文章 Xintong Song
Hi Eleanore, That does't sound like a scaling issue. It's probably a data skew, that the data volume on some of the keys are significantly higher than others. I'm not familiar with this area though, and have copied Jark for you, who is one of the community experts in this area. Thank you~

Re: scaling issue Running Flink on Kubernetes

2020-03-10 文章 Eleanore Jin
_Hi Xintong, Thanks for the prompt reply! To answer your question: - Which Flink version are you using? v1.8.2 - Is this skew observed only after a scaling-up? What happens if the parallelism is initially set to the scaled-up value? I also tried this, it

scaling issue Running Flink on Kubernetes

2020-03-10 文章 Eleanore Jin
Hi Experts, I have my flink application running on Kubernetes, initially with 1 Job Manager, and 2 Task Managers. Then we have the custom operator that watches for the CRD, when the CRD replicas changed, it will patch the Flink Job Manager deployment parallelism and max parallelism according to