Thanks, I've updated. Best, Jihoon
On Wed, Mar 11, 2015 at 11:48 AM Hyunsik Choi <[email protected]> wrote: > The presentation material you've added seems to include English > contents throughout the slide. I think that It can be listed on the > public presentation. > > Best regards, > Hyunsik > > On Tue, Mar 10, 2015 at 6:20 PM, Jihoon Son <[email protected]> wrote: > > I've added it. > > Thanks! > > Jihoon > > > > On Wed, Mar 11, 2015 at 9:28 AM Hyunsik Choi <[email protected]> wrote: > > > >> Great work! Thank you for your effort. > >> > >> Could you add your materials to the wiki page at > >> https://cwiki.apache.org/confluence/display/TAJO/Presentations? > >> > >> It will be helpful to those who want to find Tajo documentation > materials. > >> > >> Best regards, > >> Hyunsik > >> > >> > >> On Thu, Feb 26, 2015 at 9:37 PM, Jihoon Son <[email protected]> > wrote: > >> > Hi guys, > >> > I have conducted some brief performance evaluations of Tajo on Swift, > and > >> > would like to share the results. > >> > > >> > I conducted two kinds of experiments; The first experiment was to > compare > >> > the performance of Tajo with on another distributed storage, i.e., > HDFS. > >> > And the second experiment was the scalability test of Swift. > >> > > >> > Interestingly, the scan performance on Swift is slower more than two > >> times > >> > than that on HDFS. In addition, the task scheduling time on Swift is > much > >> > greater than that on HDFS, which means the query initialization cost > is > >> > very high. You can find the detailed results at the following link. > >> > > >> > http://www.slideshare.net/jihoonson/apache-on-tajo- > >> bringing-sql-to-the-openstack-world > >> > > >> > Based on those evaluation results, I would like to add some new > features > >> to > >> > improve the performance of Tajo on Swift. For example, progressive > task > >> > scheduling can mitigate the query initialization cost on Swift. In > >> > addition, we need to support location-aware computing for segmented > Swift > >> > objects. Sooner or later, I will create issues on Jira. > >> > > >> > Best Regards, > >> > Jihoon > >> >
