On Sat, Feb 23, 2019 at 02:54:35AM +0900, Amit Langote wrote: > > On Fri, Feb 22, 2019 at 09:45:38PM +0900, Amit Langote wrote: > > > I have updated the inheritance expansion patch. > > > > > > Patch 0001 rewrites optimizer/utils/inherit.c, so that it allows > > > > Thanks for your continued work on this. > > > > I applied v23 patch and imported one of our customers' schema, and ran > > explain > > on a table with 210 partitions. With patch applied there are 10x fewer > > system > > calls, as intended. > > OK, great. I guess you were running SELECT? Just in case you missed, > the patch to improve UPDATE/DELETE scalability is no longer part of > this patch series.
Yes, I understand the scope is reduced. Actually, when I tested last month, I don't think I realized that UPDATE/DELETE was included. Otherwise I would've also tested to see if it resolves the excessive RAM use with many partitions, with the explanation given that query is being replanned for every partition. I set target version to v12. https://commitfest.postgresql.org/22/1778/ Justin
