docs: public InitiateResponseMessage dedupe(long inUniqueId, TransactionInfoBaseMessage in)
      {
          if (in instanceof Iv2InitiateTaskMessage) {
              final Iv2InitiateTaskMessage init = (Iv2InitiateTaskMessage) in;
              final StoredProcedureInvocation invocation = init.getStoredProcedureInvocation();
              final String procName = invocation.getProcName();
  
              /*
               * Ning - @LoadSinglepartTable and @LoadMultipartTable always have the same txnId
               * which is the txnId of the snapshot.
               */
              if (!(procName.equalsIgnoreCase("@LoadSinglepartitionTable") ||
                      procName.equalsIgnoreCase("@LoadMultipartitionTable")) &&
                      inUniqueId <= m_lastSeenUniqueId) {
                  // already sequenced
                  final InitiateResponseMessage resp = new InitiateResponseMessage(init);
                  resp.setResults(new ClientResponseImpl(ClientResponseImpl.UNEXPECTED_FAILURE,
                          new VoltTable[0],
                          ClientResponseImpl.IGNORED_TRANSACTION));
                  return resp;
              }
          }
          return null;
      }