private void cacheHintingFilters() {
    int filtersSize = filters.size();
    hintingFilters = new boolean[filtersSize];
    for (int i = 0; i < filtersSize; i++) {
      if (filters.get(i) instanceof HintingFilter) {
        hintingFilters[i] = true;
      }
    }
  }
As checks for this are in the hot path, we want them as fast as possible, so we are caching the
status in an array.
hbase-client/src/main/java/org/apache/hadoop/hbase/filter/FilterListWithAND.java