In addition to Impala and Pheonix, I'm going to throw PrestoDB into the mix. :)
http://prestodb.io/ On Mon, Dec 2, 2013 at 10:58 AM, Doug Meil <[email protected]>wrote: > > You are going to want to figure out a rowkey (or a set of tables with > rowkeys) to restrict the number of I/O's. If you just slap Impala in front > of HBase (or even Phoenix, for that matter) you could write SQL against it > but if it's winds up doing a full-scan of an Hbase table underneath you > won't get your < 100ms response time. > > Note: I'm not saying you can't do this with Impala or Phoenix, I'm just > saying start with the rowkeys first so that you limit the I/O. Then start > adding frameworks as needed (and/or build a schema with Phoenix in the > same rowkey exercise). > > Such response-time requirements make me think that this is for application > support, so why the requirement for SQL? Might want to start writing it as > a Java program first. > > > > > > > > > > On 11/29/13 4:32 PM, "Mourad K" <[email protected]> wrote: > > >You might want to consider something like Impala or Phoenix, I presume > >you are trying to do some report query for dashboard or UI? > >MapReduce is certainly not adequate as there is too much latency on > >startup. If you want to give this a try, cdh4 and Impala are a good start. > > > >Mouradk > > > >On 29 Nov 2013, at 10:33, Ramon Wang <[email protected]> wrote: > > > >> The general performance requirement for each query is less than 100 ms, > >> that's the average level. Sounds crazy, but yes we need to find a way > >>for > >> it. > >> > >> Thanks > >> Ramon > >> > >> > >> On Fri, Nov 29, 2013 at 5:01 PM, yonghu <[email protected]> wrote: > >> > >>> The question is what you mean of "real-time". What is your performance > >>> request? In my opinion, I don't think the MapReduce is suitable for the > >>> real time data processing. > >>> > >>> > >>> On Fri, Nov 29, 2013 at 9:55 AM, Azuryy Yu <[email protected]> wrote: > >>> > >>>> you can try phoniex. > >>>> On 2013-11-29 3:44 PM, "Ramon Wang" <[email protected]> wrote: > >>>> > >>>>> Hi Folks > >>>>> > >>>>> It seems to be impossible, but I still want to check if there is a > >>>>>way > >>> we > >>>>> can do "complex" query on HBase with "Order By", "JOIN".. etc like we > >>>> have > >>>>> with normal RDBMS, we are asked to provided such a solution for it, > >>>>>any > >>>>> ideas? Thanks for your help. > >>>>> > >>>>> BTW, i think maybe impala from CDH would be a way to go, but haven't > >>> got > >>>>> time to check it yet. > >>>>> > >>>>> Thanks > >>>>> Ramon > >>> > >
