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This KIP does not plan on changing the broker default. However, it is useful to understand compatibility issues if this were to happen. 

• • By default, 'allow-server-side' auto-creation is used. The broker's 'auto.create.topics.enable' must be configured as true.
    • Although the broker config and server-side auto-creation is deprecated, this is the default to ensure compatibility.
    • If the broker config is set to false, the topic will not be created automatically.
  • Systems that rely on auto-creation would be encouraged to set the producer config auto.create.topics.enable to 'client-side.'
    • This will effectively override the deprecated broker config, so even if it is configured to true, the server will not auto-create topics.
    • Systems with older broker versions would need to set auto.create.num.partitions and auto.create.replication.factor upon allowing 'client-side' auto-creation.
  • Systems that want to turn off auto-creation completely should set the producer config to false. This will override the broker config for this producer.
  • Systems that utilize auto-creation on the consumer will no longer be able to do so with only the producer config enabled.
    • Enabling the broker config or making further changes to the code is required.

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