IT's cool 2014년 1월 22일 수요일, Yu Dongmin<[email protected]>님이 작성한 메시지:
> Hello, > > I'm very glad to hear that Tajo is getting stable and production ready. > > Here's another news. Some of us might have have seen some Hyunsik's > presentations commenting about an experimental project, c++ tajo worker. > > > Recently, I've been working on the c++ worker, even though it is a little > bit far from behind schedule than what I expected, > it is able to communicate with Tajo Master and Query Master successfully. > > This is never a replacement of Java worker, but an exchangeable worker. We > could use Java workers as is, C++ workers only, or mixed workers. > > It is designed as a vectorized execution engine hoping to process certain > types of data structures very efficiently. > > These are the supported features right now. > > - Reading and parsing csv files in the hadoop data node. > - Filtering rows within LLVM code generated evaluation > - Simple scalar functions > - Simple group by aggregation functions > > Now I'm working on 'order by' clause and doing profiling to get expected > performance. > > Working on these stuffs, I hope community to allow creating a new git > branch, say native_worker, cplus_worker or a nicer name, to make this > project together. > > > There's still a long way to go on this project, but it could be improved > with help of the Tajo community. > > > Thanks > Min
