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.
--
Álvaro Herrera https://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services