Hi Raghu: Yep, you are right, so I said solution 1 is not very precise when there are still some data you want to update/delete being stored in stream segments, solution 2 can handle this scenario you mentioned. But, in my opinion, the scenario of deleting historical data is more common than the one of updating data, the data size of stream table will grow day by day, user generally want to delete specific data to make data size not too large, for example, if user want to keep data for one year, he need to delete one year ago of data everyday. On the other hand, solution 2 is more complicated than solution 1, we need to consider the implement of solution 2 in depth. Based on the above reasons, Liang Chen, Jacky, David and I prefered to implement Solution 1 first. Is it ok for you? Is there any other suggestion?
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