what are the most critical issues that prevent TDB from handling larger data sets at the moment iyo? jvm? index?
On Sun, Jul 21, 2013 at 8:26 AM, Andy Seaborne <[email protected]> wrote: > On 18/07/13 08:00, Adeeb Noor wrote: > >> Hi All: >> >> I have been using Jena for huge biomedical application with TDB sized 3G >> and around 2 billion triples and I did notice a performance issues. Thus, >> I >> have two questions: >> >> 1- Does Jena build to handle huge app like I am developing? or do I have >> to >> use a commercial tool ? >> > > 2 billion (2*10^9) is pushing the limits of TDB. It will only handle very > simple lookup queries at this scale. > > Have you considered 4Store? > > > 2- Does Jena a single thread or can it be ran on multi? >> > > The query engine and TDB use one thread per request but there can be many > requests at the same time. This is what Fuseki is doing. > > (Actually, there is a bit of internal multithreading for sorting) > > Andy > > >> Thanks >> >> > -- --- Marco Neumann KONA
