func initFederatorBackend(buckets []BucketInfo, objLayer ObjectLayer) {
	if len(buckets) == 0 {
		return
	}

	// Get buckets in the DNS
	dnsBuckets, err := globalDNSConfig.List()
	if err != nil && !IsErrIgnored(err, dns.ErrNoEntriesFound, dns.ErrNotImplemented, dns.ErrDomainMissing) {
		dnsLogIf(GlobalContext, err)
		return
	}

	bucketsSet := set.NewStringSet()
	bucketsToBeUpdated := set.NewStringSet()