On Tue, Jan 03, 2023 at 02:53:10PM +0530, Bharath Rupireddy wrote: > In summary: > the flow when the standby is in crash recovery is pg_wal -> [archive > -> pg_wal -> stream] -> [archive -> pg_wal -> stream] -> [] -> [] ... > the flow when the standby is in archive recovery is [archive -> pg_wal > -> stream] -> [archive -> pg_wal -> stream] -> [] -> [] ...
This is my understanding as well. > The proposed patch makes the inherent state change to pg_wal after > failure to read from archive in XLogFileReadAnyTLI() to explicit by > setting currentSource to XLOG_FROM_PG_WAL in the state machine. I > think it doesn't alter the existing state machine or add any new extra > lookups in pg_wal. I'm assuming this change would simplify your other patch that modifieѕ WaitForWALToBecomeAvailable() [0]. Is that correct? [0] https://commitfest.postgresql.org/41/3663/ -- Nathan Bossart Amazon Web Services: https://aws.amazon.com