MapWithState is also very useful. I want to calculate UV in real time, but "distinct count" and "multiple streaming aggregations" are not supported. Is there any method to calculate real-time UV in the current version?
At 2016-11-19 06:01:45, "Michael Armbrust" <mich...@databricks.com> wrote: Doing this generally is pretty hard. We will likely support algebraic aggregate eventually, but this is not currently slotted for 2.2. Instead I think we will add something like mapWithState that lets users compute arbitrary stateful things. What is your use case? On Wed, Nov 16, 2016 at 6:58 PM, wszxyh <wsz...@163.com> wrote: Hi Multiple streaming aggregations are not yet supported. When will it be supported? Is it in the plan? Thanks
