code: def refresh(self, name, database=None):
          
          # TODO(wesm): can this statement be cancelled?
          stmt = self._table_command('REFRESH', name, database=database)
          self._execute(stmt)
docs: Reload HDFS block location metadata for a table, for example after
          ingesting data as part of an ETL pipeline. Related to INVALIDATE
          METADATA. See Impala documentation for more.
  
          Parameters
          ----------
          name : string
            Table name. Can be fully qualified (with database)
          database : string, optional