func (j *BatchJobPool) ResizeWorkers(n int) {
	if j == nil {
		return
	}

	j.mu.Lock()
	defer j.mu.Unlock()

	for j.workerSize < n {
		j.workerSize++
		go j.AddWorker()
	}
	for j.workerSize > n {
		j.workerSize--
		go func() { j.workerKillCh <- struct{}{} }()
	}
}

func (j *BatchJobPool) queueJob(req *BatchJobRequest) error {
	if j == nil {

	}

	globalBatchJobsMetrics.save(job.ID, ri)
	lastObject := ri.Object

	now := time.Now().UTC()

	workerSize, err := strconv.Atoi(env.Get("_MINIO_BATCH_EXPIRATION_WORKERS", strconv.Itoa(runtime.GOMAXPROCS(0)/2)))
	if err != nil {
		return err
	}

	wk, err := workers.New(workerSize)
	if err != nil {
		// invalid worker size.
		return err
	}

	ctx, cancelCause := context.WithCancelCause(ctx)

	const envRebalanceWorkers = "_MINIO_REBALANCE_WORKERS"
	workerSize, err := env.GetInt(envRebalanceWorkers, len(pool.sets))
	if err != nil {
		rebalanceLogIf(ctx, fmt.Errorf("invalid workers value err: %v, defaulting to %d", err, len(pool.sets)))
		workerSize = len(pool.sets)
	}

	// Each decom worker needs one List() goroutine/worker
	// add that many extra workers.
	workerSize += len(pool.sets)

	wk, err := workers.New(workerSize)

				return false
			}
		}
		return true
	}

	workerSize, err := strconv.Atoi(env.Get("_MINIO_BATCH_KEYROTATION_WORKERS", strconv.Itoa(runtime.GOMAXPROCS(0)/2)))
	if err != nil {
		return err
	}

	wk, err := workers.New(workerSize)
	if err != nil {
		// invalid worker size.
		return err
	}

	ctx, cancel := context.WithCancel(ctx)

	const envDecomWorkers = "_MINIO_DECOMMISSION_WORKERS"
	workerSize, err := env.GetInt(envDecomWorkers, len(pool.sets))
	if err != nil {
		decomLogIf(ctx, fmt.Errorf("invalid workers value err: %v, defaulting to %d", err, len(pool.sets)))
		workerSize = len(pool.sets)
	}

	// Each decom worker needs one List() goroutine/worker
	// add that many extra workers.
	workerSize += len(pool.sets)

	wk, err := workers.New(workerSize)

	return v == Pending || v == Failed
}

type replicationResyncer struct {
	// map of bucket to their resync status
	statusMap      map[string]BucketReplicationResyncStatus
	workerSize     int
	resyncCancelCh chan struct{}
	workerCh       chan struct{}
	sync.RWMutex
}

const (
	replicationDir      = ".replication"
	resyncFileName      = "resync.bin"
	resyncMetaFormat    = 1

	rs := replicationResyncer{
		statusMap:      make(map[string]BucketReplicationResyncStatus),
		workerSize:     resyncWorkerCnt,
		resyncCancelCh: make(chan struct{}, resyncWorkerCnt),
		workerCh:       make(chan struct{}, resyncWorkerCnt),
	}
	for i := 0; i < rs.workerSize; i++ {
		rs.workerCh <- struct{}{}
	}
	return &rs
}