I still want to know some basic theory about that efficient manner. Thank you very much!
在 2014年8月7日星期四UTC+8下午12时00分31秒，Tong Liu写道： > > (I move the topic from github issue to here) > > I want to know the theory of ES aggregation. > Maybe, it is one of them: > (1) like a Database. compute when the aggregation query comes. > (2) like Storm. When a data comes, it aggregate once. You don't need > aggregate when query comes. The aggregation query use a prepared result. So > it is very quick when query. Storm is like a real-time Hadoop. > > So ES is like (1)a common Database? or (2)Storm? > Thank you! > > > ( > > This is imotov answer: > > In short the answer to your question is aggregations are computed when an > aggregation query comes, but because of data structures that elasticsearch > is using, they can computed in very efficient manner. > > ) > On Thursday, August 7, 2014 12:00:31 PM UTC+8, Tong Liu wrote: > > (I move the topic from github issue to here) > > I want to know the theory of ES aggregation. > Maybe, it is one of them: > (1) like a Database. compute when the aggregation query comes. > (2) like Storm. When a data comes, it aggregate once. You don't need > aggregate when query comes. The aggregation query use a prepared result. So > it is very quick when query. Storm is like a real-time Hadoop. > > So ES is like (1)a common Database? or (2)Storm? > Thank you! > > > ( > > This is imotov answer: > > In short the answer to your question is aggregations are computed when an > aggregation query comes, but because of data structures that elasticsearch > is using, they can computed in very efficient manner. > > ) > -- You received this message because you are subscribed to the Google Groups "elasticsearch" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/elasticsearch/22f55524-4778-4ed6-858c-4a4994ef7b5e%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
