ruanhang1993 opened a new pull request, #21889: URL: https://github.com/apache/flink/pull/21889
## What is the purpose of the change This pull request provides the operator coordinator metric group. ## Brief change log Please see the changes in the [FLIP-274](https://cwiki.apache.org/confluence/display/FLINK/FLIP-274%3A+Introduce+metric+group+for+OperatorCoordinator). ## Verifying this change This change added unit tests. ## Does this pull request potentially affect one of the following parts: - Dependencies (does it add or upgrade a dependency): no - The public API, i.e., is any changed class annotated with `@Public(Evolving)`: yes - The serializers: no - The runtime per-record code paths (performance sensitive): no - Anything that affects deployment or recovery: JobManager (and its components), Checkpointing, Kubernetes/Yarn, ZooKeeper: no - The S3 file system connector: no ## Documentation - Does this pull request introduce a new feature? yes - If yes, how is the feature documented? not documented -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: issues-unsubscr...@flink.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org