| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | Andres Freund <andres(at)anarazel(dot)de> |
| Cc: | Fujii Masao <masao(dot)fujii(at)oss(dot)nttdata(dot)com>, Alexey Kondratov <a(dot)kondratov(at)postgrespro(dot)ru>, Kyotaro Horiguchi <horikyota(dot)ntt(at)gmail(dot)com>, a(dot)akenteva(at)postgrespro(dot)ru, a(dot)korotkov(at)postgrespro(dot)ru, i(dot)kartyshov(at)postgrespro(dot)ru, amit(dot)kapila16(at)gmail(dot)com, pgsql-hackers(at)lists(dot)postgresql(dot)org |
| Subject: | Re: [HACKERS] make async slave to wait for lsn to be replayed |
| Date: | 2020-04-10 20:29:39 |
| Message-ID: | 32218.1586550579@sss.pgh.pa.us |
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| Lists: | pgsql-hackers |
Andres Freund <andres(at)anarazel(dot)de> writes:
> I don't think a function is a good idea - it'll cause a snapshot to be
> held while waiting. Which in turn will cause hot_standby_feedback to not
> be able to report an increased xmin up. And it will possibly hit
> snapshot recovery conflicts.
Good point, but we could address that by making it a procedure no?
regards, tom lane
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