public String getPartialUpdateMode() {
        // RoutineLoad job only support row mode.
        return "row";
    }
@Test
    public void testPartialUpdateMode(@Mocked GlobalStateMgr globalStateMgr) {
        RoutineLoadJob routineLoadJob = new KafkaRoutineLoadJob();
        Assert.assertEquals(routineLoadJob.getPartialUpdateMode(), "row");
    }