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From Jihoon Son <jihoon...@apache.org>
Subject Re: Brief Evaluations of Tajo on Swift
Date Wed, 11 Mar 2015 02:51:24 GMT
Thanks, I've updated.

Best,
Jihoon

On Wed, Mar 11, 2015 at 11:48 AM Hyunsik Choi <hyunsik@apache.org> 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 <jihoonson@apache.org> wrote:
> > I've added it.
> > Thanks!
> > Jihoon
> >
> > On Wed, Mar 11, 2015 at 9:28 AM Hyunsik Choi <hyunsik@apache.org> 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 <jihoonson@apache.org>
> 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
> >>
>

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