Thanks for that Gopal. Can LLAP be used as a caching tool for data from Oracle DB or any RDBMS.
In that case does it use JDBC to get the data out from the underlying DB? Dr Mich Talebzadeh LinkedIn * https://www.linkedin.com/profile/view?id=AAEAAAAWh2gBxianrbJd6zP6AcPCCdOABUrV8Pw <https://www.linkedin.com/profile/view?id=AAEAAAAWh2gBxianrbJd6zP6AcPCCdOABUrV8Pw>* http://talebzadehmich.wordpress.com On 31 May 2016 at 21:48, Gopal Vijayaraghavan <gop...@apache.org> wrote: > > > but this sounds to me (without testing myself) adding caching capability > >to TEZ to bring it on par with SPARK. > > Nope, that was the crux of the earlier email. > > "Caching" seems to be catch-all term misused in that comparison. > > >> There is a big difference between where LLAP & SparkSQL, which has to do > >> with access pattern needs. > > On another note, LLAP can actually be used inside Spark as well, just use > LlapContext instead of HiveContext. > > > < > http://www.slideshare.net/HadoopSummit/llap-subsecond-analytical-queries-i > n-hive/30> > > > I even have a Postgres FDW for LLAP, which is mostly used for analytics > web dashboards which are hooked into Hive. > > https://github.com/t3rmin4t0r/llap_fdw > > > LLAP can do 200-400ms queries, but Postgres can get to the sub 10ms when > it comes to slicing-dicing result sets <100k rows. > > Cheers, > Gopal > > >
