wg.Add(len(objSetMap))
	for setIdx, objsGroup := range objSetMap {
		go func(set *erasureObjects, group []delObj) {
			defer wg.Done()
			dobjects, errs := set.DeleteObjects(ctx, bucket, toNames(group), opts)
			mu.Lock()
			defer mu.Unlock()
			for i, obj := range group {
				delErrs[obj.origIndex] = errs[i]
				delObjects[obj.origIndex] = dobjects[i]
			}
		}(s.sets[setIdx], objsGroup)
	}
	wg.Wait()