On Thu, Apr 27, 2017 at 5:13 AM, Oleg Golovanov <rent...@mail.ru> wrote: > Can you actualize your patch set? The error got from > 0010-hj-parallel-v12.patch.
I really should get around to setting up a cron job to tell me about that. Here's a rebased version. The things currently on my list for this patch are: 1. Implement the skew optimisation. 2. Consider Andres's suggestion of splitting MultiExecHash into two functions, serial and parallel version, rather than having all those conditional blocks in there. 3. Figure out whether the shared BufFile stuff I propose would work well for Peter Geoghegan's parallel tuple sort patch, by trying it (I've made a start, more soon). 4. Figure out how the costing model needs to be tweaked, probably based on experimentation. I'm taking a short break to work on other things right now but will post a version with those changes soon. -- Thomas Munro http://www.enterprisedb.com
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