Re: To what extent should tests rely on VACUUM ANALYZE?

Hello Tom,

29.03.2024 16:51, Tom Lane wrote:
> Alexander Lakhin <exclusion@gmail.com> writes:
>> I think that deviation can be explained by the fact that cost_index() takes
>> baserel->allvisfrac (derived from pg_class.relallvisible) into account for
>> the index-only-scan case, and I see the following difference when a test
>> run fails:
>>           relname        | relpages | reltuples | relallvisible | indisvalid | autovacuum_count | autoanalyze_count
>>
 ----------------------+----------+-----------+---------------+------------+------------------+-------------------
>> - tenk1                |      345 |     10000 |           345 |            |                0 |                 0
>> + tenk1                |      345 |     10000 |           305 |            |                0 |                 0
> Ouch.  So what's triggering that?  The intention of test_setup
> surely is to provide a uniform starting point.

Thanks for your attention to the issue!
Please try the attached...

Best regards,
Alexander