Re: Single transaction in the tablesync worker?

From: Peter Smith <smithpb2250(at)gmail(dot)com>
To: Petr Jelinek <petr(dot)jelinek(at)enterprisedb(dot)com>
Cc: Amit Kapila <amit(dot)kapila16(at)gmail(dot)com>, Ajin Cherian <itsajin(at)gmail(dot)com>, PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org>
Subject: Re: Single transaction in the tablesync worker?
Date: 2021-02-07 03:38:39
Message-ID: CAHut+Pu7PLk=TCOMXHrZXBz98qtTgcpcPAxui18JS_96zzxOaA@mail.gmail.com
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On Sat, Feb 6, 2021 at 2:10 AM Petr Jelinek
<petr(dot)jelinek(at)enterprisedb(dot)com> wrote:
>
> Hi,
>
> Some minor comments about code:
>
> > + else if (res->status == WALRCV_ERROR && missing_ok)
> > + {
> > + /* WARNING. Error, but missing_ok = true. */
> > + ereport(WARNING,
>
> I wonder if we need to add error code to the WalRcvExecResult and check
> for the appropriate ones here. Because this can for example return error
> because of timeout, not because slot is missing. Not sure if it matters
> for current callers though (but then maybe don't call the param
> missign_ok?).

You are right. The way we are using this function has evolved beyond
the original intention.
Probably renaming the param to something like "error_ok" would be more
appropriate now.

----
Kind Regards,
Peter Smith.
Fujitsu Australia

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