Re: speed up a logical replica setup

From: "Euler Taveira" <euler(at)eulerto(dot)com>
To: "Shlok Kyal" <shlok(dot)kyal(dot)oss(at)gmail(dot)com>, "kuroda(dot)hayato(at)fujitsu(dot)com" <kuroda(dot)hayato(at)fujitsu(dot)com>
Cc: "pgsql-hackers(at)lists(dot)postgresql(dot)org" <pgsql-hackers(at)lists(dot)postgresql(dot)org>, "vignesh C" <vignesh21(at)gmail(dot)com>, "Michael Paquier" <michael(at)paquier(dot)xyz>, "Peter Eisentraut" <peter(at)eisentraut(dot)org>, "Andres Freund" <andres(at)anarazel(dot)de>, "Ashutosh Bapat" <ashutosh(dot)bapat(dot)oss(at)gmail(dot)com>, "Amit Kapila" <amit(dot)kapila16(at)gmail(dot)com>
Subject: Re: speed up a logical replica setup
Date: 2024-01-24 01:29:09
Message-ID: c402b130-0226-4a2c-bb92-9e83bd6af006@app.fastmail.com
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On Mon, Jan 22, 2024, at 6:30 AM, Shlok Kyal wrote:
> We fixed some of the comments posted in the thread. We have created it
> as top-up patch 0002 and 0003.

Cool.

> 0002 patch contains the following changes:
> * Add a timeout option for the recovery option, per [1]. The code was
> basically ported from pg_ctl.c.
> * Reject if the target server is not a standby, per [2]
> * Raise FATAL error if --subscriber-conninfo specifies non-local server, per [3]
> (not sure it is really needed, so feel free reject the part.)
> * Add check for max_replication_slots and wal_level; as per [4]
> * Add -u and -p options; as per [5]
> * Addressed comment except 5 and 8 in [6] and comment in [7]

My suggestion is that you create separate patches for each change. It helps
with review and alternative proposals. Some of these items conflict with what I
have in my local branch and removing one of them is time consuming. For this
one, I did the job but let's avoid rework.

> 0003 patch contains fix for bug reported in [8].

LGTM. As I said in the other email, I included it.

I'll post a new one soon.

--
Euler Taveira
EDB https://www.enterprisedb.com/

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