docs: public static long getMBRss(Client client) {
          assert(client != null);
          long rssMax = 0;
          try {
              ClientResponse r = client.callProcedure("@Statistics", "MEMORY", 0);
              VoltTable stats = r.getResults()[0];
              stats.resetRowPosition();
              while (stats.advanceRow()) {
                  long rss = stats.getLong("RSS") / 1024;
                  if (rss > rssMax) {
                      rssMax = rss;
                  }
              }
              return rssMax;
          }
          catch (Exception e) {
              e.printStackTrace();
              System.exit(-1);
              return 0;
          }
      }