Re: wake up logical workers after ALTER SUBSCRIPTION
От | Nathan Bossart |
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Тема | Re: wake up logical workers after ALTER SUBSCRIPTION |
Дата | |
Msg-id | 20221214183759.GC773264@nathanxps13 обсуждение исходный текст |
Ответ на | Re: wake up logical workers after ALTER SUBSCRIPTION (Tom Lane <tgl@sss.pgh.pa.us>) |
Ответы |
Re: wake up logical workers after ALTER SUBSCRIPTION
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Список | pgsql-hackers |
On Wed, Dec 14, 2022 at 01:23:18PM -0500, Tom Lane wrote: > Nathan Bossart <nathandbossart@gmail.com> writes: >> I'm reasonably certain the launcher is already signaled like you describe. >> It'll just wait to start new workers if it's been less than >> wal_retrieve_retry_interval milliseconds since the last time it started >> workers. > > Oh. What in the world is the rationale for that? My assumption is that this is meant to avoid starting workers as fast as possible if they repeatedly crash. I didn't see much discussion in the original logical replication thread [0], but I do see follow-up discussion about creating a separate GUC for this [1] [2]. [0] https://postgr.es/m/b8132323-b577-428c-b2aa-bf41a66b18e7%402ndquadrant.com [1] https://postgr.es/m/CAD21AoAjTTGm%2BOx70b2OGWvb77vPcRdYeRv3gkAWx76nXDo%2BEA%40mail.gmail.com [2] https://postgr.es/m/CAD21AoDCnyRJDUY%3DESVVe68AukvOP2dFomTeBFpAd1TiFbjsGg%40mail.gmail.com -- Nathan Bossart Amazon Web Services: https://aws.amazon.com
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