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From Min Zhou <coderp...@gmail.com>
Subject Re: [DISCUSS] 0.8.0 release and next roadmap
Date Mon, 07 Apr 2014 05:20:37 GMT
Hi Henry,

It's here https://github.com/radlab/sparrow
We are discussing the scheduling issue on
https://issues.apache.org/jira/browse/TAJO-540


Min


On Sat, Apr 5, 2014 at 2:00 PM, Henry Saputra <henry.saputra@gmail.com>wrote:

> Hi Hyunsik,
>
> Just curious, which Sparrow project you were referring to?
>
> - Henry
>
> On Thu, Apr 3, 2014 at 10:24 PM, Hyunsik Choi <hyunsik@apache.org> wrote:
> > Hi folks,
> >
> > I'm very happy to see that our community is growing! Also, It's a
> pleasure
> > to discuss the Tajo 0.8.0 release. Recently, I've tested various features
> > in various contexts, and tried to figure out if there are any critical
> > problems. I think that there are only a few issues and we can release
> 0.8.0
> > next week. If there are further issues to be solved before the 0.8.0
> > release, feel free to suggest ideas.
> >
> > Also, I'd like to discuss our next roadmap. We are open to any suggestion
> > from users, contributors, and committers. Please fire away!
> >
> > I'm thinking that our next stage should focus on improving the way Tajo
> > runs in thousands of large cluster nodes and for a number of concurrent
> > users. The key issues associated with this include the following:
> >
> > * High availability
> > * Multi-tenancy scheduling
> > * More stability
> > * Improved shuffle
> >
> > The current work status is as follows. Min is working on Tajo's new
> > scheduler (TAJO-540) based on sparrow. I'll support him. As far as I
> know,
> > Alvin is working on TajoMaster HA (TAJO-704). Also, some guys including
> > myself are investigating and solving the issues which occur in large
> > clusters. These issues should be solved in order to make Tajo a complete
> > enterprise-ready production.
> >
> > In addition, there are some SQL feature support issues. Many analytic
> > problems require window functions. Also, in-subquery and scalar subquery
> > should be supported. So, I'd like to schedule them with high priority. In
> > my view, there will be very few SQL support issues if Tajo provides these
> > features.
> >
> > Besides those areas, David is working on a nested schema and its related
> > work (TAJO-710). I guess this will take quite a while because it
> requires a
> > lot of hard work. So, it would be great to schedule the nested schema
> > loosely. That's just my thoughts, anyhow.
> >
> > Aside from the discussion of our roadmap, I'd like to suggest that we
> need
> > to release more frequently after the 0.8.0 release. So far, there has
> been
> > a long period between each release because Tajo is undergoing heavy
> > development. By 'releasing early, releasing often', we will make more
> > tighter feedback loop between users and developers.
> >
> > I think that there are many additional many interesting issues to be
> > included in our roadmap. Feel free to suggest your idea. We will arrange
> > our short-term roadmap and long-term roadmap based on your suggestions.
> >
> > Thank you all so much for your contribution!
> >
> > Warm Regards,
> > Hyunsik
>



-- 
My research interests are distributed systems, parallel computing and
bytecode based virtual machine.

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