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Note: In a scenario of two participants in replicas (we are calling "policy-http-ppnt-0" and "policy-http-ppnt-1"), ACM-Runtime will assignee randomly any composition definition in prime time to specific participant based of supported element definition type. So we could have a scenario where a composition definition "composition 1.0.0" is assigned to policy-http-ppnt-0 and the instance too; the new composition "composition 1.0.1" is assigned to policy-http-ppnt-1. In that scenario the migration of an instance from "composition 1.0.0" to "composition 1.0.1" wouldn't work, because policy-http-ppnt-0 do not have "composition 1.0.1" assigned.
Solution 3: Replicas and Database support
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- Refactor CSIT to support database configuration for participants
- Refactor OOM to support database configuration for participants
- DB Migrator must be added to the helm chart and docker environments. The database schema of the older and newer versions will be different. Cache data added to the db.