# File lib/innodb/system.rb, line 198
  def table_and_index_name_by_id(index_id)
    if dd_index = data_dictionary.data_dictionary_index_ids[index_id]
      # This is a data dictionary index, which won't be found in the data
      # dictionary itself.
      [dd_index[:table], dd_index[:index]]
    elsif index_record = data_dictionary.index_by_id(index_id)
      # This is a system or user index.
      [table_name_by_id(index_record["TABLE_ID"]), index_record["NAME"]]
    end
  end