def _set(self, ctx, table_name, record_id, column_key_values):
        vsctl_table = self._get_table(table_name)
        ovsrec_row = ctx.must_get_row(vsctl_table, record_id)
        for column, key, value in column_key_values:
            ctx.set_column(ovsrec_row, column, key, value)
        ctx.invalidate_cache()
:type column_key_values: list of (column, key_string, value_json)
dataset/ETHPy150Open osrg/ryu/ryu/lib/ovs/vsctl.py/VSCtl._set