Event filtering logic may not filter all the events

Iterator<MetastoreEvent> it = metastoreEvents.iterator();
      // filter out the create events which has a corresponding drop event later
      int fromIndex = 0;
      int numFilteredEvents = 0;
      int inputSize = metastoreEvents.size();
      while (it.hasNext()) {
        MetastoreEvent current = it.next();
        if (fromIndex < metastoreEvents.size() && current.isRemovedAfter(
            metastoreEvents.subList(fromIndex + 1, metastoreEvents.size()))) {
          LOG.info(current.debugString("Filtering out this event since the object is "
              + "either removed or renamed later in the event stream"));
          it.remove();
          numFilteredEvents++;
        }
        fromIndex++;
      }