Re: Watermarking and Timestamp on Kafka stream union
You would apply a assignTimestampsAndWatermarks() operation on the unioned stream. However, this would not allow you to sort the join by timestamp, since no sorting is supported out-of-box in Flink.
> On 26. Jul 2017, at 21:37, G.S.Vijay Raajaa <[hidden email]> wrote:
> I am having a union of 3 kafka topic stream, i am joining them by a timestamp field. I would like to order the join by timestamp. How do I assign a watermark and extract timestamp from a union stream?
> Vijay Raajaa GS