Re: [PATCH] Use indexes on the subscriber when REPLICA IDENTITY is full on the publisher - Mailing list pgsql-hackers

On Mon, Mar 13, 2023 at 6:14 PM Önder Kalacı <onderkalaci@gmail.com> wrote:
>
>>
>>
>> 3. Removed the cases for dropping the index. This ensures that after
>> dropping the index on the table we switch to either an index scan (if
>> a new index is created) or to a sequence scan. It doesn't seem like a
>> very interesting case to me.
>
>
> For that test, my goal was to ensure/show that the invalidation callback
> is triggered after `DROP / CREATE INDEX` commands.
>

Fair point. I suggest in that case just keep one of the tests for Drop
Index such that after that it will pick up a sequence scan. However,
just do the poll for the number of index scans stat once. I think that
will cover the case you are worried about without having a noticeable
impact on test timing.

--
With Regards,
Amit Kapila.