On 7/10/20 8:06 AM, Michel Pelletier wrote:
> On Fri, Jul 10, 2020 at 5:37 AM Alvaro Herrera <alvherre@2ndquadrant.com
> <mailto:alvherre@2ndquadrant.com>> wrote:
>
> On 2020-Jul-09, Michel Pelletier wrote:
>
> > I restored a snapshot and I can drop the tables there, so we'll
> likely
> > proceed to swap the replicas over tomorrow. I have this corrupted
> > instance i can continue to debug on if necessary. There seem to
> be some
> > other issues now that we're investigating, like a max(timestamp)
> query on
> > the old instance is doing a seqscan on all the partitions instead
> of using
> > an index that's there, the new instance from the snapshot
> correctly uses
> > the index, so I suspect further corruption.
>
> This being RDS makes it very difficult to debug. For example I would
> suggest a debugger to find the problem, but you don't have access to
> that.
>
>
> Yes agreed, we'll probably terminate the instance today if there's no
> further lines of investigation. I know this isn't their forum, but I
> don't get why AWS pins all their extension versions to the postgres
> version, If you use 12.2 on rds, you get pglogical 2.3.0. If you want
> 2.3.1, you have to upgrade to pg 12.3. I don't get that logic,
> shouldn't 2.3.1 be the current version on both? What's the point of
> them supporting 12.2 if they ship an extension version that 2ndQ says
> you shouldn't use?
>
> Anyway, just musing out loud, don't expect any kind of answer to that
> here. :)
Already asked and not really answered:
https://www.postgresql.org/message-id/A51655C0-BDD0-4F52-8DC5-2672AADA32D0%40gmail.com
>
> Thanks again everyone,
>
> -Michel
>
>
>
> --
> Álvaro Herrera https://www.2ndQuadrant.com/
> PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
>
--
Adrian Klaver
adrian.klaver@aklaver.com