On Mon, Jul 15, 2024 at 2:47 PM Nathan Bossart <nathandboss...@gmail.com> wrote: > My understanding is that the correctness of this GUC check hook depends on > wal_level being a PGC_POSTMASTER GUC. The check hook would always return > true during startup, and there'd be an additional cross-check in > PostmasterMain() that would fail startup if necessary. After that point, > we know that wal_level cannot change, so the GUC check hook for > summarize_wal can depend on wal_level. If it fails, my expectation would > be that the server would just ignore that change and continue.
But how do you know that, during startup, the setting for summarize_wal is processed after the setting for wal_level? -- Robert Haas EDB: http://www.enterprisedb.com
