docs: private boolean noMissingMapWideEvent(AtomicReferenceArray<Queue<Integer>> removedCountHolders) {
          for (int i = 0; i < partitionCount; i++) {
              if (removedCountHolders.get(i).isEmpty()) {
                  // means we still have not-received map-wide event for this partition
                  return false;
              }
          }
          return true;
      }