Re: allow online change primary_conninfo - Mailing list pgsql-hackers

From Andres Freund
Subject Re: allow online change primary_conninfo
Date
Msg-id 20181126174636.pf5i4md7ptbsgnq5@alap3.anarazel.de
Whole thread Raw
In response to Re: allow online change primary_conninfo  (Sergei Kornilov <sk@zsrv.org>)
Responses Re: allow online change primary_conninfo  (Sergei Kornilov <sk@zsrv.org>)
Re: allow online change primary_conninfo  (Michael Paquier <michael@paquier.xyz>)
List pgsql-hackers
Hi,

On 2018-11-26 12:30:06 +0300, Sergei Kornilov wrote:
> Hmm... I considered SIGHUP processing was in fast loop and therefore shutdown should be fast. But i recheck code and
founda possible long loop without processing SIGHUP (in case we receive new data faster than writes to disk). Ok, i
willrevert back.
 
> How about write to WalRcvData only clobbered conninfo?

I'm not sure I understand what you mean?  The way I'd solve this is that
that only walreceiver, at startup, writes out its conninfo/slot_name,
sourcing the values from the GUCs. That way there's no issue with values
being overwritten early.

- Andres


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