code: public void sendEOLMessage(int partitionId) {
          final long initiatorHSId = m_cartographer.getHSIdForMaster(partitionId);
          Iv2EndOfLogMessage message = new Iv2EndOfLogMessage(partitionId);
          m_mailbox.send(initiatorHSId, message);
      }
docs: Sends an end of log message to the master of that partition. This should
  only be called at the end of replay.
  
  @param partitionId