public void removeRecordIndex(Long oldValue, Long recordId) {
   ConcurrentMap<Long, Record> records = mapRecords.get(oldValue);
   if (records != null) {
     records.remove(recordId);
     if (records.size() == 0) {
       mapRecords.remove(oldValue);
       sortedSet.remove(oldValue);
     }
   }
 }