Nice doc, clear design. It is a good start ! I saw an example on aggregation is illustrated during the doc, we may implement more operators with this design, for example, SORT, JOIN. One question is: we implement vectorization under plan three, that is, the optimizer cannot feel the change in this way, it still estimates overall cost like ' total_cost = startup_cost + cpu_per_tuple * tuples + seq_page_cost * pages 'In my opinion, the second part (CPU costs) changes a lot, so it is should be a stage design, any further plan on it? -------------—— Kuien Liu/奎恩 ------------------------------------------------------------------发件人：Shujie Zhang <[email protected]>发送时间：2018年2月9日(星期五) 16:35收件人：dev <[email protected]>主 题：a vectorized execution design document Hi,
A vectorized execution design document have been uploaded to the issue#1450: https://issues.apache.org/jira/browse/HAWQ-1450 Inside the document are a lot of ideas about how to implement a vectorized executor, We welcome any comments on the content and suggestions for improvement, thanks. Zhang Shujie 2018-02-09
