Re: Race condition in recovery?

On Sat, May 22, 2021 at 8:33 PM Robert Haas <robertmhaas(at)gmail(dot)com> wrote:

> > For my original case, both standby1 and standby2 are connected to the
> > primary. Now, standby1 is promoted and standby2 is shut down. And,
> > before restarting, all the local WAL of the standby2 is removed so
> > that it can follow the new primary. The primary info and restore
> > command for standby2 are changed as per the new primary(standby1).
>
> One thing I don't understand is why the final WAL segment from the
> original primary didn't end up in the archive in this scenario. If it
> had, then we would not have seen the issue in that case.

I used different archive folders for primary and new
primary(standby1). I have modified your test.sh slightly (modified
test2.sh attached) so that I can demonstrate my scenario where I was
seeing the issue and this is getting fixed after putting the fix we
discussed[1]

[1]
-
expectedTLEs = readTimeLineHistory(receiveTLI);
+
expectedTLEs = readTimeLineHistory(recoveryTargetTLI);

--
Regards,
Dilip Kumar
EnterpriseDB: http://www.enterprisedb.com