Thanks, Hyunsik for guideline of the next roadmap I started to test the centralized cache of HDFS-4949. Thanks.
-Jinho 2014-04-04 15:01 GMT+09:00 Jihoon Son <[email protected]>: > 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 <[email protected]>: > > > 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 > > >
