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Wondering how to check if taskmanager is registered with the jobmanager, without asking job manager

As part of deploying task managers and job managers, I'd like to expose healthcheck on both task managers and job managers.

For the task managers, one of the requirements that they are healthy, is that they have successfully registered themselves with the job manager.

Is there a way to achieve this, without making a call to job manager ( to do that, I first need to make a call to the zookeeper to find the job manager, so I'm trying to simplify the health check ).

Ideally, taskmanager would have a metric that says, ( am registered ), but afaik, that doesn't exist https://ci.apache.org/projects/flink/flink-docs-stable/monitoring/metrics.html#cluster

This is my first post in the email list, happy to update/change my question, if I messed up, or misunderstood something.