h.storeCtxCancel()
	}

	// Set logch to nil and close it.
	// This will block all Send operations,
	// and finish the existing ones.
	// All future ones will be discarded.
	h.logChMu.Lock()
	xioutil.SafeClose(h.logCh)
	h.logCh = nil
	h.logChMu.Unlock()

	if h.producer != nil {
		h.producer.Close()
		h.client.Close()
	}

	// Wait for messages to be sent...
	h.wg.Wait()
}

			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
				}

	w := newMetacacheWriter(wr, 16<<10)
	w.reuseBlocks = true // We are not sharing results, so reuse buffers.
	defer w.Close()
	out, err := w.stream()
	if err != nil {
		return err
	}
	defer xioutil.SafeClose(out)
	var objsReturned int

	objReturned := func(metadata []byte) {
		if opts.Limit <= 0 {
			return
		}
		if m, _, _ := isIndexedMetaV2(metadata); m != nil && !m.AllHidden(true) {
			objsReturned++

						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 {

	h.wg.Wait()

	// Set logch to nil and close it.
	// This will block all Send operations,
	// and finish the existing ones.
	// All future ones will be discarded.
	h.logChMu.Lock()
	xioutil.SafeClose(h.logCh)
	h.logCh = nil
	h.logChMu.Unlock()

// The context allows the operation to be canceled.
func (r *metacacheReader) readAll(ctx context.Context, dst chan<- metaCacheEntry) error {
	r.checkInit()
	if r.err != nil {
		return r.err
	}
	defer xioutil.SafeClose(dst)
	if r.current.name != "" {
		select {
		case <-ctx.Done():
			r.err = ctx.Err()
			return ctx.Err()
		case dst <- r.current:
		}
		r.current.name = ""
		r.current.metadata = nil
	}

func listIAMConfigItems(ctx context.Context, objAPI ObjectLayer, pathPrefix string) <-chan itemOrErr[string] {
	ch := make(chan itemOrErr[string])

	go func() {
		defer xioutil.SafeClose(ch)

		// Allocate new results channel to receive ObjectInfo.
		objInfoCh := make(chan itemOrErr[ObjectInfo])

		if err := objAPI.Walk(ctx, minioMetaBucket, pathPrefix, objInfoCh, WalkOptions{}); err != nil {

// 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.

// otherwise the function will return nil.
func mergeEntryChannels(ctx context.Context, in []chan metaCacheEntry, out chan<- metaCacheEntry, readQuorum int) error {
	defer xioutil.SafeClose(out)
	top := make([]*metaCacheEntry, len(in))
	nDone := 0
	ctxDone := ctx.Done()

	// Use simpler forwarder.
	if len(in) == 1 {
		for {
			select {
			case <-ctxDone:
				return ctx.Err()

	}
	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.