On Fri, Jun 19, 2020 at 10:28:56AM -0700, Peter Geoghegan wrote: > On Fri, Jun 19, 2020 at 10:27 AM Tom Lane <t...@sss.pgh.pa.us> wrote: >> I'm a bit skeptical about changing anything here. There are quite >> a large number of GUCs that can affect the regression results, and >> it wouldn't be sane to try to force them all to fixed values. For >> one thing, that'd be a PITA to maintain, and for another, it's not >> infrequently useful to run the tests with nonstandard settings to >> see what happens. > > +1
We cared about such plan stability that in the past FWIW, see for example c588df9 as work_mem is a setting that people like to change. Why should this be different? work_mem is a popular configuration setting. Perhaps people will not complain about that being an issue if running installcheck, we'll know with the time. Anyway, I am fine to just change my default configuration if the conclusion is to not touch that and let it be, but I find a bit annoying that switching work_mem from 4MB to 1MB is enough to destabilize the tests. And this worked just fine in past releases. -- Michael
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