merlimat commented on issue #3104: [Feature request] Namespace/topic rack affinity URL: https://github.com/apache/pulsar/issues/3104#issuecomment-443438794 @cbornet I think this could be achieved even today (this time for real :) ). There is a concept of "namespace isolation". It's not super-well documented, but it's a feature that was there since the beginning. http://pulsar.apache.org/docs/en/pulsar-admin.html#ns-isolation-policy The idea is that you can isolate namespaces to a subset of brokers and these brokers will be dedicated to these namespaces. Then, there is the concept of primary and secondary broker sets. The primary set is where you want the topics for that namespaces to be placed by preference. If no broker from primary set is available, then topics will spill over to secondary. One could configure "primary" to be the brokers from the preferred DC and secondary to `.*`
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