Doc: add commentary about cowboy assignment of maintenance_work_mem. Whilst working on commit 041e8b95b I happened to notice that parallel_vacuum_main() assigns directly to the maintenance_work_mem GUC. This is definitely not per project conventions, so I tried to fix it to use SetConfigOption(). But that fails with "parameter cannot be set during a parallel operation". It doesn't seem worth working on a cleaner answer, at least not till we have a few more instances of similar problems. But add some commentary, just so nobody gets the idea that this is an approved way to set a GUC.
Branch ------ master Details ------- https://git.postgresql.org/pg/commitdiff/53a49365052026907afff7613929710d1e7f0da0 Modified Files -------------- src/backend/commands/vacuumparallel.c | 7 +++++++ 1 file changed, 7 insertions(+)
