Hi, On 2018-12-16 17:30:30 -0300, Alvaro Herrera wrote: > On 2018-Dec-16, Andres Freund wrote: > > > > I think there's a one-line fix, attached: just add the number of changes > > > in a subxact to nentries_mem when the transaction is assigned to the > > > parent. > > > > Isn't this going to cause significant breakage, because we rely on > > nentries_mem to be accurate? > > > > /* try to load changes from disk */ > > if (entry->txn->nentries != entry->txn->nentries_mem) > > Bahh. > > Are you suggesting I should try a more thorough rewrite of > reorderbuffer.c?
I'm saying you can't just randomly poke at one variable without actually checking how it's used. I kinda doubt you're going to find something that's immediately backpatchable here. Perhaps something for master that's then backpatched after it matured for a while. Greetings, Andres Freund