docs: private void deliverReadyTxns() {
          // First, pull all the sequenced messages, if any.
          VoltMessage m = m_replaySequencer.poll();
          while(m != null) {
              deliver(m);
              m = m_replaySequencer.poll();
          }
          // Then, try to pull all the drainable messages, if any.
          m = m_replaySequencer.drain();
          while (m != null) {
              if (m instanceof Iv2InitiateTaskMessage) {
                  // Send IGNORED response for all SPs
                  Iv2InitiateTaskMessage task = (Iv2InitiateTaskMessage) m;
                  final InitiateResponseMessage response = new InitiateResponseMessage(task);
                  response.setResults(new ClientResponseImpl(ClientResponse.UNEXPECTED_FAILURE,
                              new VoltTable[0],
                              ClientResponseImpl.IGNORED_TRANSACTION));
                  m_mailbox.send(response.getInitiatorHSId(), response);
              }
              m = m_replaySequencer.drain();
          }
      }