tajo-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Hyunsik Choi <hyun...@apache.org>
Subject Re: [DISCUSS] 0.8.0 release and next roadmap
Date Fri, 11 Apr 2014 13:30:46 GMT
Hi folks,

I'd like to discuss the next version number. In Jira, we have provisionally
used 1.0, and we didn't decide the next major version. I propose 0.9 as the
next major version. What do you think about this?

Regards,
Hyunsik


On Thu, Apr 10, 2014 at 11:05 AM, Jihoon Son <jihoonson@apache.org> wrote:

> Min, thanks for reminding us!
> It's a mandatory issue.
> We need to implement that feature ASAP.
>
> Thanks,
> Jihoon
>
>
> 2014-04-10 3:19 GMT+09:00 Hyunsik Choi <hyunsik@apache.org>:
>
> > Min,
> >
> > Yes, you are right. I'm thinking it everyday, but I missed it. Thank you
> > for reminding me. It would be achieved by modifying Query class to
> execute
> > independent execution blocks in parallel. I'll add it to the wiki.
> >
> > Thanks,
> > Hyunsik
> >
> >
> > On Thu, Apr 10, 2014 at 2:43 AM, Min Zhou <coderplay@gmail.com> wrote:
> >
> > > Yeah.. Another issue,  seems a query like A join B. Tajo will scan A at
> > > first stage, after that in the 2nd stage scan B. Doesn't run it in
> > > parallel, right?
> > >
> > >
> > > Min
> > >
> > >
> > > On Wed, Apr 9, 2014 at 10:10 AM, Hyunsik Choi <hyunsik@apache.org>
> > wrote:
> > >
> > > > I've just updated the roadmap page. Please take a look at the section
> > > > 'After 0.8.0'
> > > > https://cwiki.apache.org/confluence/display/TAJO/Tajo+Roadmap
> > > >
> > > > If there are missed or additional ideas, feel free to add them on
> that
> > > > page or suggest them here. After we discuss them more, we would
> decide
> > > > their priorities.
> > > >
> > > > Best regards,
> > > > Hyunsik
> > > >
> > > > On Sat, Apr 5, 2014 at 12:06 AM, Hyunsik Choi <hyunsik@apache.org>
> > > wrote:
> > > > > Hi Hyoungjun,
> > > > >
> > > > > Yes, TPC-H and TPC-DS scripts for Tajo are necessary. If we provide
> > > > > users with some prepared benchmark environment, users can test Tajo
> > > > > easily. I'll file your idea on the wiki. Thank you for your
> > > > > suggestion.
> > > > >
> > > > > Regards,
> > > > > Hyunsik
> > > > >
> > > > > On Fri, Apr 4, 2014 at 11:48 PM, 김형준 <babokim@gmail.com>
wrote:
> > > > >> Hi Hyunsik ,
> > > > >>
> > > > >> I did benchmark test with TPC-H, TPC-DS data. Benchmark script
> like
> > > hive
> > > > >> and impala is more helpful to test.
> > > > >>
> > > > >> https://github.com/rxin/TPC-H-Hive
> > > > >> https://github.com/cartershanklin/hive-testbench
> > > > >> https://github.com/cloudera/impala-tpcds-kit
> > > > >>
> > > > >> Thanks!
> > > > >> Hyoungjun
> > > > >>
> > > > >>
> > > > >> 2014-04-04 23:40 GMT+09:00 Hyunsik Choi <hyunsik@apache.org>:
> > > > >>
> > > > >>> Hi Jihoon,
> > > > >>>
> > > > >>> CUBE and ROLL-UP are key features for analytic problems.
I filed
> it
> > > on
> > > > the
> > > > >>> wiki.
> > > > >>>
> > > > >>> TAJO-266 and TAJO-161 will give more optimization opportunities
> to
> > > > >>> logical planning and distributed query planning. But, I'm
not
> sure
> > it
> > > > >>> can be included in short-term roadmap. They are necessary,
but
> they
> > > > >>> are not required right now. In my view, it would be reasonable
to
> > > > >>> schedule them on long-term roadmap.
> > > > >>>
> > > > >>> Warm regards,
> > > > >>> Hyunsik
> > > > >>>
> > > > >>> On Fri, Apr 4, 2014 at 3:01 PM, Jihoon Son <jihoonson@apache.org
> >
> > > > wrote:
> > > > >>> > Hi Hyunsik,
> > > > >>> > I'm very glad that we can release the next version,
soon.
> > > > >>> > Also, appreciate for the guideline of the next roadmap.
> > > > >>> >
> > > > >>> > Addition to the aforementioned features, I have the
two
> > > suggestions.
> > > > >>> > First is the support of CUBE operator (TAJO-259). Acutally,
I
> > > > started it
> > > > >>> > quite a long time ago, but it is delayed due to the
lower
> > priority
> > > > than
> > > > >>> > other stability issues. But, since this operator is
widely used
> > in
> > > > >>> analytic
> > > > >>> > applications, we need to add this feature as soon as
possible.
> > So,
> > > > in my
> > > > >>> > opinion, it would be good to add this feature to the
next
> > roadmap.
> > > > >>> >
> > > > >>> > Second is the advanced query optimization. TAJO-266
is an issue
> > for
> > > > >>> making
> > > > >>> > the query plan more flexible. After that, we can employ
the
> > plenty
> > > > >>> > optimization opportunities like described in TAJO-161.
> > > > >>> >
> > > > >>> > How do you guys think about these issues?
> > > > >>> >
> > > > >>> > Best Regards,
> > > > >>> > Jihoon
> > > > >>> >
> > > > >>> >
> > > > >>> > 2014-04-04 14:24 GMT+09:00 Hyunsik Choi <hyunsik@apache.org>:
> > > > >>> >
> > > > >>> >> 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
> > > > >>> >>
> > > > >>>
> > > > >>
> > > > >>
> > > > >>
> > > > >> --
> > > > >> Tajo - Big Data Warehouse System on Hadoop
> > > > >> http://tajo.apache.org/
> > > >
> > >
> > >
> > >
> > > --
> > > My research interests are distributed systems, parallel computing and
> > > bytecode based virtual machine.
> > >
> > > My profile:
> > > http://www.linkedin.com/in/coderplay
> > > My blog:
> > > http://coderplay.javaeye.com
> > >
> >
>

Mime
  • Unnamed multipart/alternative (inline, None, 0 bytes)
View raw message