Re: Synchronizing slots from primary to standby

From: "Drouvot, Bertrand" <bertranddrouvot(dot)pg(at)gmail(dot)com>
To: Amit Kapila <amit(dot)kapila16(at)gmail(dot)com>
Cc: "Zhijie Hou (Fujitsu)" <houzj(dot)fnst(at)fujitsu(dot)com>, shveta malik <shveta(dot)malik(at)gmail(dot)com>, Peter Smith <smithpb2250(at)gmail(dot)com>, "Hayato Kuroda (Fujitsu)" <kuroda(dot)hayato(at)fujitsu(dot)com>, Bharath Rupireddy <bharath(dot)rupireddyforpostgres(at)gmail(dot)com>, Peter Eisentraut <peter(dot)eisentraut(at)enterprisedb(dot)com>, Bruce Momjian <bruce(at)momjian(dot)us>, Ashutosh Sharma <ashu(dot)coek88(at)gmail(dot)com>, Andres Freund <andres(at)anarazel(dot)de>, pgsql-hackers <pgsql-hackers(at)postgresql(dot)org>, Ajin Cherian <itsajin(at)gmail(dot)com>, Alvaro Herrera <alvherre(at)alvh(dot)no-ip(dot)org>
Subject: Re: Synchronizing slots from primary to standby
Date: 2023-12-01 11:15:16
Message-ID: 6694284d-c847-42df-8f76-6efa8eeeb0df@gmail.com
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Hi,

On 12/1/23 12:06 PM, Amit Kapila wrote:
> On Wed, Nov 29, 2023 at 3:24 PM Drouvot, Bertrand
> <bertranddrouvot(dot)pg(at)gmail(dot)com> wrote:
>> I think I'm fine with documenting the fact that the user should not change the failover
>> value. But if he does change it (because at the end nothing prevents it to do so) then
>> I think the meaning of subfailoverstate should still make sense.
>>
>
> How user can change the slot's failover property? Do we provide any
> command for it?

It's doable, using a replication connection:

"
$ psql replication=database
psql (17devel)
Type "help" for help.

postgres=# ALTER_REPLICATION_SLOT logical_slot6 (FAILOVER false);
ALTER_REPLICATION_SLOT
"

Regards,

--
Bertrand Drouvot
PostgreSQL Contributors Team
RDS Open Source Databases
Amazon Web Services: https://aws.amazon.com

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