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Nevertheless, we can make the ReplicaPlacer an internal pluggable component. This means the mechanism would not be exposed to external users, but could be utilized in internal testing, special-purpose scenarios, or controlled experiments. By allowing different implementations to be injected internally, we can make the placement logic more flexible for testing purposes, without compromising the stability of the controller.

Public Interfaces

New internal broker configuration:

• Class: ReplicationConfigs
• Name: internal.replica.placer.class.name
• Type: string
• Default: StripedReplicaPlacer
• Valid Values: non-empty string
• Doc: The fully qualified class name of the ReplicaPlacer implementation. This class is used by the broker to determine the placement of replicas when topics or partitions are created.

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