Re: Logical replication 'invalid memory alloc request size 1585837200' after upgrading to 17.5

On Fri, 20 Jun 2025 at 10:30, Alexander Lakhin <exclusion@gmail.com> wrote:
>
> Hello Sawada-san,
>
> 17.06.2025 20:40, Masahiko Sawada wrote:
>
> Pushed the fix (d87d07b7ad3). Thank you for working on this fix.
>
>
> As buildfarm [1] shows, the test case added to invalidation_distribution
> with 1230be12f fails against -DCLOBBER_CACHE_ALWAYS on REL_13_STABLE:
> diff -U3
/home/buildfarm/trilobite/buildroot/REL_13_STABLE/pgsql.build/contrib/test_decoding/expected/invalidation_distribution.out
/home/buildfarm/trilobite/buildroot/REL_13_STABLE/pgsql.build/contrib/test_decoding/output_iso/results/invalidation_distribution.out
> ---
/home/buildfarm/trilobite/buildroot/REL_13_STABLE/pgsql.build/contrib/test_decoding/expected/invalidation_distribution.out
  2025-06-17 10:24:24.382768613 +0200 
> +++
/home/buildfarm/trilobite/buildroot/REL_13_STABLE/pgsql.build/contrib/test_decoding/output_iso/results/invalidation_distribution.out
  2025-06-17 15:01:53.921913314 +0200 
> @@ -31,7 +31,7 @@
>  step s2_get_binary_changes: SELECT count(data) FROM pg_logical_slot_get_binary_changes('isolation_slot', NULL, NULL,
'proto_version','1', 'publication_names', 'pub') WHERE get_byte(data, 0) = 73; 
>  count
>  -----
> -    0
> +    1
>  (1 row)
>
>  ?column?
>
> I could reproduce this locally and also checked that the test passes on
> REL_14_STABLE and master.
>
> Could you look at this, please?

Thanks for reporting this, we will analyse this and provide a fix for this.

Regards,
Vignesh