docs: public boolean compatibleWithTable(VoltTable table) {
              String candidateName = getTableName(table);
              // table can't have the same name as the view
              if (candidateName.equals(viewName)) {
                  return false;
              }
              // view is for a different table
              if (candidateName.equals(srcTableName) == false) {
                  return false;
              }
  
              try {
                  // ignore ret value here - just looking to not throw
                  int groupColIndex = table.getColumnIndex(groupColName);
                  VoltType groupColType = table.getColumnType(groupColIndex);
                  if (groupColType == VoltType.DECIMAL) {
                      // no longer a good type to group
                      return false;
                  }
  
                  // check the sum col is still value
                  int sumColIndex = table.getColumnIndex(sumColName);
                  VoltType sumColType = table.getColumnType(sumColIndex);
                  if ((sumColType == VoltType.TINYINT) ||
                          (sumColType == VoltType.SMALLINT) ||
                          (sumColType == VoltType.INTEGER)) {
                      return true;
                  }
                  else {
                      // no longer a good type to sum
                      return false;
                  }
              }
              catch (IllegalArgumentException e) {
                  // column index is bad
                  return false;
              }
          }