I am working on a hybrid ONAP deployment using Frankfurt release of ONAP. The idea is to have several components on a cloud platform including a central dmaap hub, then components such as CDS can be deployed on onprem cluster with its own dmaap deployment. Using mirror maker is required to replicate the dmaap topics/messages between the main dmaap hub and the onprem dmaap deployment.
Please let me know if you have any alternatives that do not require mirror maker. Per my understanding, to achieve the above use case mirror maker is required.