Re: [HACKERS] pg_receivewal and messages printed in non-verbose mode - Mailing list pgsql-hackers

From Magnus Hagander
Subject Re: [HACKERS] pg_receivewal and messages printed in non-verbose mode
Date
Msg-id CABUevEzM29vCJ-3UETZ+W0gaRBYrdqAsB=QziwdUhgWRY2AwBQ@mail.gmail.com
Whole thread Raw
In response to Re: [HACKERS] pg_receivewal and messages printed in non-verbose mode  (Michael Paquier <michael.paquier@gmail.com>)
Responses Re: [HACKERS] pg_receivewal and messages printed in non-verbose mode
List pgsql-hackers
On Wednesday, June 14, 2017, Michael Paquier <michael.paquier@gmail.com> wrote:
On Tue, Jun 13, 2017 at 4:50 PM, Craig Ringer <craig@2ndquadrant.com> wrote:
> On 13 June 2017 at 14:33, Michael Paquier <michael.paquier@gmail.com> wrote:
>> Those come from stop_streaming in pg_receivewal.c. Shouldn't those
>> messages only show up to the user if --verbose is used? It seems
>> strange to me that at least the first one is written to the user as
>> that's not an error after promoting a standby.
>
> I agree. At least the first should be --verbose only.

I have been looking at all the code surrounding pg_receivewal and
pg_recvlogical and those are indeed the two only places where we print
a message in non-verbose mode even if those are not explicit errors.
pg_recvlogical does not show up any messages when it is signaled or
when it receives SIGINT or reaches the end of LSN position. I don't
think that this is worth complicating the code for, just noticed the
inconsistency on the way.

Perhaps a committer will care about that. Or not. For now I am just
adding that in the CF.

I agree that this should be fixed.

I wonder if we should actually just remove the second message? AFAICT no other tools log that information. Is there any particular reason why we want that logging in pg_receivewal when we don't have it in other tools?

//Magnus



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