RE: Synchronizing slots from primary to standby

From: "Zhijie Hou (Fujitsu)" <houzj(dot)fnst(at)fujitsu(dot)com>
To: Masahiko Sawada <sawada(dot)mshk(at)gmail(dot)com>, Amit Kapila <amit(dot)kapila16(at)gmail(dot)com>
Cc: shveta malik <shveta(dot)malik(at)gmail(dot)com>, Bertrand Drouvot <bertranddrouvot(dot)pg(at)gmail(dot)com>, Dilip Kumar <dilipbalaut(at)gmail(dot)com>, Peter Smith <smithpb2250(at)gmail(dot)com>, Nisha Moond <nisha(dot)moond412(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: 2024-01-25 04:24:58
Message-ID: OS0PR01MB5716DF633158928E23C7E8ED947A2@OS0PR01MB5716.jpnprd01.prod.outlook.com
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On Wednesday, January 24, 2024 1:11 PM Masahiko Sawada <sawada(dot)mshk(at)gmail(dot)com> wrote:
> Here are random comments on slotsyncworker.c (v66):

Thanks for the comments:

>
> ---
> + elog(ERROR,
> + "cannot synchronize local slot \"%s\" LSN(%X/%X)"
> + " to remote slot's LSN(%X/%X) as synchronization"
> + " would move it backwards", remote_slot->name,
>
> Many error messages in slotsync.c are splitted into several lines, but I think it
> would reduce the greppability when the user looks for the error message in the
> source code.

Thanks for the suggestion! we combined most of the messages in the new version
patch. Although some messages including the above one were kept splitted,
because It's too long(> 120 col including the indent) to fit into the screen,
so I feel it's better to keep these messages splitted.

Best Regards,
Hou zj

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