Key:         ReplicationWorkersWait,
			Description: `maximum sleep duration between objects to slow down batch replication operation` + defaultHelpPostfix(ReplicationWorkersWait),
			Optional:    true,
			Type:        "duration",
		},
		config.HelpKV{
			Key:         KeyRotationWorkersWait,
			Description: `maximum sleep duration between objects to slow down batch keyrotation operation` + defaultHelpPostfix(KeyRotationWorkersWait),
			Optional:    true,

		},
		config.HelpKV{
			Key:         Sleep,
			Description: `maximum sleep duration between objects to slow down heal operation` + defaultHelpPostfix(Sleep),
			Optional:    true,
			Type:        "duration",
		},
		config.HelpKV{
			Key:         IOCount,
			Description: `maximum IO requests allowed between objects to slow down heal operation` + defaultHelpPostfix(IOCount),
			Optional:    true,
			Type:        "int",
		},

	}

	if nerr, ok := err.(*rest.NetworkError); ok {
		if down := xnet.IsNetworkOrHostDown(nerr.Err, false); down {
			return true
		}
		if errors.Is(nerr.Err, rest.ErrClientClosed) {
			return true
		}
	}
	if errors.Is(err, grid.ErrDisconnected) {
		return true
	}
	// More corner cases suitable for storage REST API
	switch {
	// A peer node can be in shut down phase and proactively

	go func() {
		for {
			client.doListen(ctx, listenCh, v)
			select {
			case <-ctx.Done():
				return
			default:
				// There was error in the REST request, retry after sometime as probably the peer is down.
				time.Sleep(5 * time.Second)
			}
		}
	}()
}

// Trace - send http trace request to peer nodes

	wrappedHandler := http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
		// If server is in shutdown.
		if atomic.LoadUint32(&srv.inShutdown) != 0 {
			// To indicate disable keep-alive, server is shutting down.
			w.Header().Set("Connection", "close")

			// Add 1 minute retry header, incase-client wants to honor it
			w.Header().Set(RetryAfter, "60")

			w.WriteHeader(http.StatusServiceUnavailable)

func (initialSnapShot LeakDetect) DetectLeak(t TestErrHandler) {
	if t.Failed() {
		return
	}
	// Loop, waiting for goroutines to shut down.
	// Wait up to 5 seconds, but finish as quickly as possible.
	deadline := UTCNow().Add(leakDetectDeadline * time.Second)
	for {
		// get sack snapshot of relevant go routines.

// Config represents the heal settings.
type Config struct {
	// Bitrot will perform bitrot scan on local disk when checking objects.
	Bitrot string `json:"bitrotscan"`

	// maximum sleep duration between objects to slow down heal operation.
	Sleep   time.Duration `json:"sleep"`
	IOCount int           `json:"iocount"`

	DriveWorkers int `json:"drive_workers"`

	// Cached value from Bitrot field
	cache struct {

	go func() {
		r := rand.New(rand.NewSource(time.Now().UnixNano()))
		// Leader node (that successfully acquires the lock inside licenceUpdaterLoop)
		// will keep performing the license update. If the leader goes down for some
		// reason, the lock will be released and another node will acquire it and
		// take over because of this loop.
		for {
			licenceUpdaterLoop(ctx, objAPI)

			// license update stopped for some reason.

	bufferPool   sync.Pool        // pool of []byte objects for input
	csvDstPool   sync.Pool        // pool of [][]string used for output
	close        chan struct{}    // used for shutting down the splitter before end of stream
	readerWg     sync.WaitGroup   // used to keep track of async reader.
}

// queueItem is an item in the queue.
type queueItem struct {

		return nil, oErr
	}
	return queueStore, nil
}

// Tear down queue store.
func tearDownQueueStore() error {
	return os.RemoveAll(queueDir)
}

// TestQueueStorePut - tests for store.Put
func TestQueueStorePut(t *testing.T) {
	defer func() {
		if err := tearDownQueueStore(); err != nil {
			t.Fatal("Failed to tear down store ", err)
		}
	}()
	store, err := setUpQueueStore(queueDir, 100)