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From Jihoon Son <jihoon...@apache.org>
Subject Re: Brief Evaluations of Tajo on Swift
Date Wed, 11 Mar 2015 01:20:47 GMT
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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