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• Requires additional operational overhead and monitoring.
• Difficult to integrate with auto-topic creation scenarios.

Specifying Assignment During Topic Creation 

Users could use Admin API's CreateTopicsRequest createTopics with explicit ReplicaAssignment ReplicaAssignments when creating topics, but rejected due to the following concerns:

• Pushes complexity to client applications.
• Leads to inconsistent placement strategies across different clients  .
• Not suitable for In internal testing scenarios where broker-level control dynamic testing is required, manual assignment lacks flexibility.