This is awesome Hyunsik .. very helpful for newbies like me. Keep adding :)
On Thu, Jun 13, 2013 at 2:18 AM, Hyunsik Choi <[email protected]> wrote: > I omitted the wiki page link in the previous post. > > http://wiki.apache.org/tajo/Architecture > > > On Thu, Jun 13, 2013 at 6:17 PM, Hyunsik Choi <[email protected]> wrote: > > > Hi Camellia, > > > > I've added a wiki page which contains brief descriptions about > > TaskRunnerLaunchImpl, TaskRunnerListenerImpl, Task and TaskRunner. I hope > > that this page is useful for you. > > > > Also, PK and UNIQUE is not supported in the current implementation of > > Tajo. Now, It would be good to omit EXT 3.2. Later, if Tajo supports PK > and > > UNIQUE, let's discuss that feature at that time. > > > > If you need additional documents about Tajo internals, feel free to ask > me. > > > > Best regards, > > Hyunsik > > > > > > > > On Sun, Jun 9, 2013 at 8:32 PM, Hyunsik Choi <[email protected]> wrote: > > > >> Hi camellia, > >> > >> Above all, I'm sorry for lack of documents. I'm reading your design > >> document. That looks great. After I read it deeply, I'll give comment to > >> you. Now, I leave answers of your questions. > >> > >> 1) I assumed that the join condition is specified in the FROM clause, > >> not in the WHERE clause. Is this assumption fine? > >> > >> Actually, inner join conditions can be in either FROM clause or WHERE > >> clause. Outer joins (qualified join) must be in FROM clause. So, the > >> assumption is fine. > >> > >> 2) Are there any PK and UNIQUE constraints in TAJO? > >> --> this is related to EXT 3.2 in the SDD, which otherwise is > >> not possible > >> > >> Currently, there are no PK and UNIQUE constraints in Tajo. In the > future, > >> Tajo can have such constraints. I'll mention this work after I think it > >> more. > >> > >> 3) At stage 5, DEC5.1. not sure if needed. > >> > >> If you build a global plan correctly, the plan will work in the cluster. > >> I think that you don't need to add any extension to that part. > >> > >> 4) I need to understand better the link between TaskRunnerLaunchImpl, > >> TaskRunnerListenerImpl, Task and TaskRunner. Is any documentation > >> available, please? > >> > >> Actually, there is no available document for those parts. I'm sorry for > >> this point. I'll make a comprehensive document for those parts. I'll > take a > >> Ph.D. oral defense at June 11. I'll share the document with you until > June > >> 13. After the defense, I can spend my whole time on Tajo. > >> > >> Best regards, > >> Hyunsik > >> > >> > >> On Sat, Jun 8, 2013 at 11:12 PM, camelia c <[email protected] > >wrote: > >> > >>> Hello, > >>> > >>> I uploaded version 1 of the SDD and here are some items to discuss & > >>> questions: > >>> > >>> 1) I assumed that the join condition is specified in the FROM clause, > >>> not in the WHERE clause. Is this assumption fine? > >>> > >>> 2) Are there any PK and UNIQUE constraints in TAJO? > >>> --> this is related to EXT 3.2 in the SDD, which otherwise is > >>> not possible > >>> > >>> 3) At stage 5, DEC5.1. not sure if needed. > >>> > >>> 4) I need to understand better the link between TaskRunnerLaunchImpl, > >>> TaskRunnerListenerImpl, Task and TaskRunner. Is any documentation > >>> available, please? > >>> > >>> Next week, I plan to make a diagram as well and to take some example > >>> queries and analyze the output of each stage of processing for them. > >>> > >>> I look forward to receiving Your feedback! > >>> > >>> Thank You! > >>> Camelia > >>> > >>> > >>> > >>> --- On Sun, 6/2/13, Hyunsik Choi <[email protected]> wrote: > >>> > >>> From: Hyunsik Choi <[email protected]> > >>> Subject: Re: [GSoc2013] - Outer Join > >>> To: "tajo-dev" <[email protected]> > >>> Date: Sunday, June 2, 2013, 9:59 PM > >>> > >>> Camelia, > >>> > >>> Wow! That site really looks great and very informative to us. > >>> > >>> - hyunsik > >>> > >>> > >>> On Sat, Jun 1, 2013 at 5:12 AM, camelia c <[email protected]> > >>> wrote: > >>> > >>> > > >>> > Hello, > >>> > > >>> > This is the website I've created: > >>> > > >>> > https://sites.google.com/site/gsoc2013tajo34/home > >>> > > >>> > Thank You, > >>> > Camelia > >>> > > >>> > > >>> > --- On Thu, 5/30/13, Henry Saputra <[email protected]> wrote: > >>> > > >>> > From: Henry Saputra <[email protected]> > >>> > Subject: Re: [GSoc2013] - Outer Join > >>> > To: "[email protected]" <[email protected]> > >>> > Date: Thursday, May 30, 2013, 3:00 PM > >>> > > >>> > You can link it to the Tajo wiki to help centralize the info about > >>> GSOC for > >>> > Tajo: http://wiki.apache.org/tajo/GSoC2013 > >>> > > >>> > Or you can create a page in the wiki for the design too. > >>> > > >>> > > >>> > - Henry > >>> > > >>> > > >>> > On Wed, May 29, 2013 at 7:41 PM, Hyunsik Choi <[email protected]> > >>> wrote: > >>> > > >>> > > Hi camelia, > >>> > > > >>> > > That's good start. We could find the right way from your design > >>> document > >>> > > for this project. > >>> > > > >>> > > If your work is available online, I don't care. You can use Google > >>> site, > >>> > a > >>> > > blog, or github. You also can share your work on your blog and some > >>> code > >>> > > repository like github. > >>> > > > >>> > > Best regards, > >>> > > Hyunsik > >>> > > > >>> > > > >>> > > On Thu, May 30, 2013 at 5:31 AM, camelia c <[email protected] > > > >>> > wrote: > >>> > > > >>> > > > Hello, > >>> > > > > >>> > > > I started working at the Software Design Document for this > >>> project, as > >>> > > > planned in the schedule for this period, and I hope that by the > >>> start > >>> > of > >>> > > > next week( Monday, June 3rd) to have the version 1 of it to > >>> discuss it > >>> > > with > >>> > > > You. > >>> > > > > >>> > > > Also, I was wondering how do You prefer that I keep track online > >>> of the > >>> > > > work at the project: a Google site or a blog or what else do You > >>> > suggest? > >>> > > > Something like a weekly diary of the progress at this project. > >>> > > > > >>> > > > Thank You very much, > >>> > > > Camelia > >>> > > > > >>> > > > > >>> > > > --- On Tue, 5/28/13, Henry Saputra <[email protected]> > >>> wrote: > >>> > > > > >>> > > > From: Henry Saputra <[email protected]> > >>> > > > Subject: Re: [GSoc2013] - Outer Join > >>> > > > To: "[email protected]" < > [email protected] > >>> > > >>> > > > Date: Tuesday, May 28, 2013, 1:14 AM > >>> > > > > >>> > > > Woot! > >>> > > > > >>> > > > On Monday, May 27, 2013, camelia c wrote: > >>> > > > > >>> > > > > Hello, > >>> > > > > > >>> > > > > Thank You very much for having accepted my proposal for the > TAJO > >>> > > > Project! > >>> > > > > > >>> > > > > Looking forward to plenty of good results working at TAJO, > >>> > > > > Camelia > >>> > > > > > >>> > > > > > >>> > > > > >>> > > > >>> > > >>> > >> > >> > > >
