你好。 在用kafka table connector时如果使用eventTime，需要怎么启用这个eventTime, 没有找到一些相应的sample,
我是这样用的, 1. 设置Stream环境setStreamTimeCharacteristic(TimeCharacteristic.EventTime); 2. 在connector里指定watermark，其中transTime是消息里的字段 " rowtime AS TO_TIMESTAMP(FROM_UNIXTIME(transTime / 1000, 'yyyy-MM-dd HH:mm:ss')), \n " + " WATERMARK FOR rowtime AS rowtime - INTERVAL '10' SECOND \n" + 3. 然后直接用datastream的window ds.keyBy(marketCode).timeWindow(Time.minutes(1L)); 但在运行时会报以下exception, 已经 在connector里定义了，还需要assign吗？ java.lang.RuntimeException: Record has Long.MIN_VALUE timestamp (= no timestamp marker). Is the time characteristic set to 'ProcessingTime', or did you forget to call 'DataStream.assignTimestampsAndWatermarks(...)'? 即使我在datastream里定义了strategy ， ds.assignTimestampsAndWatermarks(WatermarkStrategy.forBoundedOutOfOrderness(Duration.ofSeconds(10))); 也还是报上面一样的错。 -- Sent from: http://apache-flink.147419.n8.nabble.com/
