Hi David. Thank you so much!
Regards, Jason 2017-04-28 2:50 GMT+09:00 David Alves <[email protected]>: > The suggestion of 20-30 per tablet is more about the number of available > cores than the size of the data. > Tools like impala derive parallelism from the number of tablets thus > having that count adjusted (but not necessarily equal to) to the core count > gives you a good performance tradeoff. > Of course this is not a hard limit, the tablet server should be able > anything up to 100 reasonably well depending on your hardware. > > HTH > -david > > > On Tue, Apr 25, 2017 at 9:19 PM, Jason Heo <[email protected]> > wrote: > >> Hi. >> >> This email >> <http://mail-archives.apache.org/mod_mbox/kudu-user/201702.mbox/%3CCALo2W-WkicyuSiErfn2bNPyDAVd%3DjxA0hLij%2BA_tdtVBTYu-wQ%40mail.gmail.com%3E> >> (and >> many other resources) suggests that tserver should have small number of >> tablets. >> >> In the above mail, Dan says that: >> >> >> something more like 20 or 30 would be ideal depending on hardware.. >> >> ... >> >> I would aim for tablet size on the order of 50GiB, >> >> >> I'm curious why 20~30 per tserver would be ideal. Does this mean storing >> 1TB~1.5TB per tserver is ideal? Could someone please explain this? >> >> The reason I ask is that I'm currently doing capacity planning. >> >> Regards, >> >> Jason >> > >
