Github user mxm commented on the issue: https://github.com/apache/flink/pull/2257 It was just a surprise to me that we're breaking the original ResourceManager role. If the ResourceManager doesn't get eventually notified about new TaskManagers, then it is not guaranteed anymore that the ResourceManager can fulfill pool size requests. The JobManager will have to deal with the pool size and the logic to ensure enough resources are available. Thus, the JobManager will be more concerned with managing resources.
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