On 8/5/21 12:03 AM, Mark Dilger wrote:
> Hackers,
>
> You can easily get a cache lookup failure by changing the regression tests as included in this small patch. The
failurelooks thus:
>
> +COMMENT ON STATISTICS ab1_a_b_stats IS 'new comment';
> +CREATE ROLE temp_role;
> +SET SESSION AUTHORIZATION temp_role;
> +COMMENT ON STATISTICS ab1_a_b_stats IS 'changed comment';
> +ERROR: cache lookup failed for type 27447
> +DROP STATISTICS ab1_a_b_stats;
> +ERROR: cache lookup failed for type 27447
> +ALTER STATISTICS ab1_a_b_stats RENAME TO ab1_a_b_stats_new;
> +ERROR: must be owner of statistics object ab1_a_b_stats
> +RESET SESSION AUTHORIZATION;
> +DROP ROLE temp_role;
>
> I believe this case simply has not had any test coverage, as I don't
> see any way the current code would ever work. It treats the Oid of the
> statistics object as a type, which it is not.
>
Yeah, you're right - this is broken since 7b504eb282c. Thanks for the
fix, I'll get it committed.
regards
--
Tomas Vondra
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company