Cache ColumnIndex in HiveBaseResultSet

  public int findColumn(String columnName) throws SQLException {
    int columnIndex = 0;
    boolean findColumn = false;
    for (String normalizedColumnName : normalizedColumnNames) {
      ++columnIndex;
      String[] names = normalizedColumnName.split("\\.");
      String name = names[names.length -1];
      if (name.equalsIgnoreCase(columnName) || normalizedColumnName.equalsIgnoreCase(columnName)) {
        findColumn = true;
        break;
      }
    }
    if (!findColumn) {
      throw new SQLException("Could not find " + columnName + " in " + normalizedColumnNames);
    } else {
      return columnIndex;
    }
  }