if err != nil {
							start, rangeLen = 0, ci.Size
						}

						// Set content length.
						w.Header().Set(xhttp.ContentLength, strconv.FormatInt(rangeLen, 10))
						if rs != nil {
							contentRange := fmt.Sprintf("bytes %d-%d/%d", start, start+rangeLen-1, ci.Size)
							w.Header().Set(xhttp.ContentRange, contentRange)
						}

						io.Copy(w, bytes.NewReader(ci.Data))

		case <-ctx.Done():
			// server could be restarting - need
			// to exit immediately
			return
		}
	}
}

const (
	resyncWorkerCnt        = 10 // limit of number of bucket resyncs is progress at any given time
	resyncParallelRoutines = 10 // number of parallel resync ops per bucket
)

func newresyncer() *replicationResyncer {
	rs := replicationResyncer{

	ctx, cancel := globalLeaderLock.GetLock(ctx)
	defer cancel()

	healTimer := time.NewTimer(siteHealTimeInterval)
	defer healTimer.Stop()

	var maxRefreshDurationSecondsForLog float64 = 10 // 10 seconds..

	for {
		select {
		case <-healTimer.C:
			c.RLock()
			enabled := c.enabled
			c.RUnlock()
			if enabled {
				refreshStart := time.Now()