Aitozi From my side, I do not think distinct is very easy to deal with. Even though together work with kafka support exactly-once.
For uv, we can use a bloomfilter to filter pv for geting uv in the end. Window is usually used in an aggregate operation, so I think all should be realized by windows. I am not familiar with this fields, so I still want to know what others response this question. Cheers Minglei > 在 2018年6月27日，下午5:12，aitozi <gjying1...@gmail.com> 写道： > > Hi, community > > I am using flink to deal with some situation. > > 1. "distinct count" to calculate the uv/pv. > 2. calculate the topN of the past 1 hour or 1 day time. > > Are these all realized by window? Or is there a best practice on doing this? > > 3. And when deal with the distinct, if there is no need to do the keyBy > previous, how does the window deal with this. > > Thanks > Aitozi. > > > > -- > Sent from: > http://apache-flink-user-mailing-list-archive.2336050.n4.nabble.com/
