// shouldRebalance returns whether the specified store is overweight
// according to the cluster mean and should rebalance a range.
func (a allocator) shouldRebalance(s *proto.StoreDescriptor) bool {
sl := a.storePool.getStoreList(*s.CombinedAttrs(), a.deterministic)
if sl.used.mean < minFractionUsedThreshold {
return s.Capacity.RangeCount > int32(math.Ceil(sl.count.mean))
}
return s.Capacity.FractionUsed() > sl.used.mean
}
// ShouldRebalance returns whether the specified store is overweight
// according to the cluster mean and should rebalance a range.
func (a *allocator) ShouldRebalance(s *proto.StoreDescriptor) bool {
a.Lock()
defer a.Unlock()
sl := a.getStoreList(*s.CombinedAttrs())
if sl.used.mean < minFractionUsedThreshold {
return s.Capacity.RangeCount > int32(math.Ceil(sl.count.mean))
}
return s.Capacity.FractionUsed() > sl.used.mean
}