Exactly. Second-level data latency is on road map, but we prioritize more on faster cubing, TopN, and more flexible aggregation groups.
On Wed, Aug 5, 2015 at 11:42 PM, 蒋旭 <[email protected]> wrote: > I think that Kylin can support second-level data latency if the inverted > index is ready. > > > The biggest problem is that inverted index is not in the high priority > tasks. :) > > > Thanks > JiangXu > > > ------------------ 原始邮件 ------------------ > 发件人: Luke Han <[email protected]> > 发送时间: 2015年08月05日 23:02 > 收件人: [email protected] <[email protected]> > 主题: Re: Kylin Real time > > > > Kylin is OLAP not OLTP, even with streaming feature, it still support Near > real-time, do not expected sub-second data latency (query latency still > will be sub-second latency). > For example, if your customer want to see user's action information on your > website "right now" (like you said milliseconds), I do not recommend to > leverage Kylin this monument, but if your user are ok to see the data > several minutes even seconds before, that could be benefited by Kylin > streaming. > > It's really depends on how fast your user want to see the result from the > source data. > > Realtime monitoring and alert is not Kylin's target to serve:) > > Thanks. > > > Best Regards! > --------------------- > > Luke Han > > On Wed, Aug 5, 2015 at 2:43 PM, Siddharth Ubale < > [email protected] > > wrote: > > > Hi Luke, > > > > Thanks for the update! > > > > Our case is a real time streaming OLAP. We want to query the the data in > > OLAP system and it should respond with low latency(probably 1-2 seconds) > > and the state of the OLAP table is real time and not pre-calculated. In > > short, OLAP will function like OLTP.. > > It is probably wishful to think that the system should provide data in > > milliseconds , however, if that can be provided it will suffice our > needs. > > > > > > Thanks, > > Siddharth Ubale > > > > -----Original Message----- > > From: Luke Han [mailto:[email protected]] > > Sent: Monday, August 03, 2015 7:22 PM > > To: [email protected] > > Subject: Re: Kylin Real time > > > > Hi Siddharth, > > Kylin's next majority release (0.8.x) will support Streaming OLAP > > which will coming in Q4 since it still under development now, as Hongbin > > mentioned above. > > Could you please drop me a mail about your case? I would like to > > better understand your scenario to well manage coming features? > > > > Thanks. > > > > > > > > > > Best Regards! > > --------------------- > > > > Luke Han > > > > On Wed, Jul 29, 2015 at 2:08 PM, hongbin ma <[email protected]> > wrote: > > > > > For current 0.7 releases, you cannot. > > > > > > Real time data processing and querying will be added in 0.8 release. > > > It is still under development and testing. We have achieved good > > > progress on it, please wait for announcements. > > > > > > On Wed, Jul 29, 2015 at 2:02 PM, Siddharth Ubale < > > > [email protected]> wrote: > > > > > > > Hi , > > > > > > > > I would like to ask whether Kylin can be used as a real time > > > > querying system? > > > > The process of building a cube , makes it look like a batch process > > > > after which the queries are with low latency.. however can We get a > > > > real time idea of what the OLAP system's state is at the query > > > > instance? > > > > > > > > Thanks, > > > > Siddharth > > > > > > > > > > > > > > > > -- > > > Regards, > > > > > > *Bin Mahone | 马洪宾* > > > Apache Kylin: http://kylin.io > > > Github: https://github.com/binmahone > > > > > >
