private static final String NUMBER_OF_NODES = "number_of_nodes";
    private static final String NUMBER_OF_DATA_NODES = "number_of_data_nodes";
    private static final String NUMBER_OF_PENDING_TASKS = "number_of_pending_tasks";
    private static final String NUMBER_OF_IN_FLIGHT_FETCH = "number_of_in_flight_fetch";
    private static final String DELAYED_UNASSIGNED_SHARDS = "delayed_unassigned_shards";

    private static final String[] CAT_NAMES =
            { "aliases", "allocation", "count", "fielddata", "health", "indices", "master", "nodeattrs", "nodes", "pending_tasks",
                    "plugins", "recovery", "repositories", "thread_pool", "shards", "segments", "snapshots", "templates" };

    // ===================================================================================

| `minio_node_ilm_expiry_pending_tasks`                        | Number of pending ILM expiry tasks in the queue.                                                           |
| `minio_node_ilm_transition_active_tasks`                     | Number of active ILM transition tasks.                                                                     |

	expiryPendingTasks           MetricName = "expiry_pending_tasks"
	expiryMissedTasks            MetricName = "expiry_missed_tasks"
	expiryMissedFreeVersions     MetricName = "expiry_missed_freeversions"
	expiryMissedTierJournalTasks MetricName = "expiry_missed_tierjournal_tasks"
	expiryNumWorkers             MetricName = "expiry_num_workers"
	transitionPendingTasks       MetricName = "transition_pending_tasks"

	mu      sync.RWMutex
	workers atomic.Pointer[[]chan expiryOp]

	ctx    context.Context
	objAPI ObjectLayer

	stats expiryStats
}

// PendingTasks returns the number of pending ILM expiry tasks.
func (es *expiryState) PendingTasks() int {
	w := es.workers.Load()
	if w == nil || len(*w) == 0 {
		return 0
	}
	var tasks int
	for _, wrkr := range *w {
		tasks += len(wrkr)
	}