func (brs *BucketReplicationStats) Empty() bool {
	return len(brs.Stats) == 0 && brs.ReplicaSize == 0
}

// Clone creates a new BucketReplicationStats copy
func (brs BucketReplicationStats) Clone() (c BucketReplicationStats) {
	// This is called only by replicationStats cache and already holds a
	// read lock before calling Clone()

	c = brs

	}
	// OK, parse data.
	if _, err = brs.UnmarshalMsg(data[4:]); err != nil {
		return brs, err
	}

	switch brs.Version {
	case resyncMetaVersionV1:
	default:
		return brs, fmt.Errorf("unexpected resync meta version: %d", brs.Version)
	}
	return brs, nil
}

// save resync status to resync.bin

type BucketReplicationResyncStatus struct {
	Version int `json:"version" msg:"v"`
	// map of remote arn to their resync status for a bucket
	TargetsMap map[string]TargetReplicationResyncStatus `json:"resyncMap,omitempty" msg:"brs"`
	ID         int                                      `json:"id" msg:"id"`
	LastUpdate time.Time                                `json:"lastUpdate" msg:"lu"`
}