Hi, The service engine plugin interface defines confchg_fn and sync APIs. Both callbacks are triggered by tetempg's confchg_fn. It seems two callbacks carry the same information about configuration changes and so I think configuration update(like membership update) can be done either one of two APIs (confchg_fn or sync). So a service needs to implement one of two APIs. Am I correct?
Then what is the advantage of using sync service? Does it guarantee that all processors in cluster are synchronized about configuration? How? Anyway if then, will it take more time to sync all processors than just processing confchg_fn? Thanks hj
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