| From: | Amit Kapila <amit(dot)kapila16(at)gmail(dot)com> |
|---|---|
| To: | Masahiko Sawada <sawada(dot)mshk(at)gmail(dot)com> |
| Cc: | "Hayato Kuroda (Fujitsu)" <kuroda(dot)hayato(at)fujitsu(dot)com>, Shlok Kyal <shlok(dot)kyal(dot)oss(at)gmail(dot)com>, Bertrand Drouvot <bertranddrouvot(dot)pg(at)gmail(dot)com>, shveta malik <shveta(dot)malik(at)gmail(dot)com>, Ashutosh Bapat <ashutosh(dot)bapat(dot)oss(at)gmail(dot)com>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: POC: enable logical decoding when wal_level = 'replica' without a server restart |
| Date: | 2025-09-15 02:55:12 |
| Message-ID: | CAA4eK1JTy9B7ABkT7Np4cHOcU0MLbfFA1bVbsn=Ay_00Oqj2Ow@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Fri, Sep 12, 2025 at 11:18 PM Masahiko Sawada <sawada(dot)mshk(at)gmail(dot)com> wrote:
>
> On Thu, Sep 11, 2025 at 9:08 PM Amit Kapila <amit(dot)kapila16(at)gmail(dot)com> wrote:
> >
>
> > For the shutdown sequence, can't we think of resetting effective_wal
> > after a restart?
>
> Does it mean that effective_wal_level keeps 'logical' until the next
> server starts?
>
Yes, IIUC, effective_wal_level is anyway a derived value based on
current wal_level and presence of logical slots. So, what will be the
impact if it is not accurate at shutdown?
--
With Regards,
Amit Kapila.
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