Oh, that was an expression of my regret about my weak pull-requests. There exists no offence. It's a duty. I hope you didn't waste your time much due to my stupid learning cost.
After Hyunsik's direct advice, I have studied Tajo Jira more and understand what you mean slightly more. Now I understand many speedup issues, e.g. offheap-based scanner, zero-copy physical layer processing. For newbies like me, we need more men like you. For the TPC-DS, Tajo PMC doesn't make any committment in Roadmap already. I respect the current roadmap. You need not worry about that. It's my personal hope as I mentioned before in this mailing list. Here is more recent another report about TPC-DS. (It's consistent with the report shared by Hyunsik.) https://developer.ibm.com/hadoop/blog/2014/12/02/big-sql-3-0-hadoop-ds-benchmark-performance-isnt-everything/ Thank you all. Warmly, Dongjoon.
