if err != nil {
						errStr = fmt.Sprintf("error with %s: %s", globalNotificationSys.peerClients[index].String(), err.Error())
					}
				}()
			}
		}(index)
	}

	time.Sleep(duration)
	xioutil.SafeClose(r.eof)
	wg.Wait()
	for globalNetPerfRX.ActiveConnections() != 0 {
		time.Sleep(time.Second)
	}
	rx := float64(globalNetPerfRX.RXSample)
	delta := globalNetPerfRX.firstToDisconnect.Sub(globalNetPerfRX.lastToConnect)

					Marker:   lastObject,
					Filter:   selectObj,
					AskDisks: walkQuorum,
				}); err != nil {
					cancelCause(err)
					xioutil.SafeClose(walkCh)
					return
				}
				for obj := range prefixWalkCh {
					walkCh <- obj
				}
			}
			xioutil.SafeClose(walkCh)
		}()

		prevObj := ""

		skipReplicate := false
		for res := range slowCh {
			if res.Err != nil {

		}
	}
	for _, idx := range permutes {
		b := buckets[idx]
		if e := oldCache.find(b.Name); e != nil {
			cache.replace(b.Name, dataUsageRoot, *e)
			bucketCh <- b
		}
	}
	xioutil.SafeClose(bucketCh)

	bucketResults := make(chan dataUsageEntryInfo, len(disks))

	// Start async collector/saver.
	// This goroutine owns the cache.
	var saverWg sync.WaitGroup
	saverWg.Add(1)
	go func() {

	return nil
}

func (client *storageRESTClient) NSScanner(ctx context.Context, cache dataUsageCache, updates chan<- dataUsageEntry, scanMode madmin.HealScanMode, _ func() bool) (dataUsageCache, error) {
	defer xioutil.SafeClose(updates)

	st, err := storageNSScannerRPC.Call(ctx, client.gridConn, &nsScannerOptions{
		DiskID:   *client.diskID.Load(),
		ScanMode: int(scanMode),
		Cache:    &cache,
	})
	if err != nil {

			disks, infos, _ := set.getOnlineDisksWithHealingAndInfo(true)
			if len(disks) == 0 {
				xioutil.SafeClose(results)
				err := fmt.Errorf("Walk: no online disks found in (set:%d pool:%d) %w", setIdx, poolIdx, errErasureReadQuorum)
				cancelCause(err)
				return err
			}
			go func() {
				defer xioutil.SafeClose(listOut)
				send := func(e metaCacheEntry) {
					if e.isDir() {
						// Ignore directories.

		return clnt.RemoveBucket(cctx, bucket)
	}

	objectsCh := make(chan minio.ObjectInfo)

	// Send object names that are needed to be removed to objectsCh
	go func() {
		defer xioutil.SafeClose(objectsCh)
		opts := minio.ListObjectsOptions{
			Prefix:    prefix,
			Recursive: true,
		}
		for object := range clnt.ListObjects(cctx, bucket, opts) {
			if object.Err != nil {
				return
			}

		go p.AddLargeWorker(input, &p.activeLrgWorkers)
	}
	for len(p.lrgworkers) > n {
		worker := p.lrgworkers[len(p.lrgworkers)-1]
		p.lrgworkers = p.lrgworkers[:len(p.lrgworkers)-1]
		xioutil.SafeClose(worker)
	}
}

// ActiveWorkers returns the number of active workers handling replication traffic.
func (p *ReplicationPool) ActiveWorkers() int {
	return int(atomic.LoadInt32(&p.activeWorkers))
}

						return
					}
				case <-ctx.Done():
					return
				}
			}
		}(ctx, peerChannels[index], &wg)
	}
	go func(wg *sync.WaitGroup, ch chan MetricV2) {
		wg.Wait()
		xioutil.SafeClose(ch)
	}(&wg, ch)
	return ch
}

// GetBucketMetrics - gets the cluster level bucket metrics from all nodes excluding self.
func (sys *NotificationSys) GetBucketMetrics(ctx context.Context) <-chan MetricV2 {

// has to wait until a safe point is reached, such as between scanning
// two objects.
func (h *healSequence) traverseAndHeal(objAPI ObjectLayer) {
	h.traverseAndHealDoneCh <- h.healItems(objAPI)
	xioutil.SafeClose(h.traverseAndHealDoneCh)
}

// healMinioSysMeta - heals all files under a given meta prefix, returns a function
// which in-turn heals the respective meta directory path and any files in int.

	}
	return false
}

func (z *erasureServerPools) rebalanceBuckets(ctx context.Context, poolIdx int) (err error) {
	doneCh := make(chan error, 1)
	defer xioutil.SafeClose(doneCh)

	// Save rebalance.bin periodically.
	go func() {
		// Update rebalance.bin periodically once every 5-10s, chosen randomly
		// to avoid multiple pool leaders herding to update around the same
		// time.