I am new to reactive programming.

My need is to populate all master data into a Hashmap from master data table at service start.
I am using reactive to get flux of master data as below

The above code doesn’t work and my statusMap is always empty.

Flux<StatusMaster> list = statusMasterRepository.findAll();
list.flatMap(status -> {
        statusMap.put(status.getAccountStatus(),status);
        return Flux.just(status);
        });