Nikolay (alone, again) reveals some issues that might hit those who perform major PostgreSQL upgrades with minimal downtime.Links:- "Upgrades" – PostgresFM episode 037: https://postgres.fm/episodes/upgrades- recovery_target_lsn: https://postgresqlco.nf/doc/en/param/recovery_target_lsn/- recovery_target_action: https://postgresqlco.nf/doc/en/param/recovery_target_action/- pg_easy_replicate https://github.com/shayonj/pg_easy_replicate/- HN discussion of this tool: https://news.ycombinator.com/item?id=36405761- Waiting for Postgres 16: Logical decoding on standbys: https://pganalyze.com/blog/5mins-postgres-16-logical-decoding- pg_upgrade and logical replication (discussion in pgsql-hackers): https://www.postgresql.org/message-id/flat/20230217075433.u5mjly4d5cr4hcfe%40jrouhaud- allow upgrading publisher node (proposal to natively support running pg_upgrade on publisher, WIP): https://commitfest.postgresql.org/43/4273/- ❓🤔 pg_upgrade instructions involving "rsync --size-only" might lead to standby corruption? (discussion in pgsql-hackers): https://www.postgresql.org/message-id/flat/CAM527d8heqkjG5VrvjU3Xjsqxg41ufUyabD9QZccdAxnpbRH-Q%40mail.gmail.com~~~What did you like or not like? What should we discuss next time? Let us know via a YouTube comment, on social media, or by commenting on our Google doc!If you would like to share this episode, here's a good link (and thank you!)~~~Postgres FM is brought to you by:Nikolay Samokhvalov, founder of Postgres.aiMichael Christofides, founder of pgMustardWith special thanks to:Jessie Draws for the amazing artwork 

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