Github user mxm commented on the issue:
https://github.com/apache/flink/pull/2257
Thank you for taking the time to revise some parts of the PR! I like the
changes. The eventual resource registration has been re-introduced but
simplified to only acknowledge the registration of TaskManagers at the
JobManager. We could think about moving the acknowledgment of resources after
the TaskManager registration at the JobManager. That would guarantee the full
startup of the "worker". Actually, thinking about it again, it would break the
semantics of the `registeredWorkers` map when the leader changes (because
TaskManagers disconnect then). We may just leave it as it is.
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