Re: [Postgres-xc-general] Data Node Scan Performance

[amul s. <sul...@ya...>]

>On Tuesday, 29 April 2014 10:38 AM, Aaron Jackson <aja...@re...> wrote:
> my question is, does the coordinator execute the data node scan serially 
>or in parallel - and if it's serially, 
>is there any thought around how to make it parallel?

IMO, scan on data happens independently i.e parallel, the scan result is collected at co-ordinator and returned to client.

Referring distributed table using other than distribution key(in your case it Q instead of k), has little penalty. 

Regards,
Amul Sul