On Mon, Jul 15, 2024 at 11:06 AM Adrian Klaver <adrian.klaver@xxxxxxxxxxx> wrote:
On 7/15/24 07:53, Ron Johnson wrote:
> On Mon, Jul 15, 2024 at 10:35 AM Peter J. Holzer <hjp-pgsql@xxxxxx
> <mailto:hjp-pgsql@xxxxxx>> wrote:
> [snip]
>
>
> Is it possible that some other process created an entry in
> rel_group_user between these two queries?
>
> That was, in fact, the problem. At just the wrong time to impact one of
> the child databases (TAPd), but not the other two (TAPb and TAPc).
>
> TAPd=# select * from rel_group_user
> where user_id between 1100 and 1300
> order by user_id;
> user_id | group_id | modified_by | modified_on
> ---------+----------+-------------+-------------------------
> 1133 | 2 | 1133 | 2024-07-15 08:43:35.669
> 1142 | 2 | 1142 | 2024-07-15 09:05:58.451
> 1147 | 2 | 1147 | 2024-07-15 09:30:37.169
> 1158 | 2 | 1158 | 2024-07-15 09:36:45.142
> 1197 | 2 | 1197 | 2024-07-15 09:52:58.477
> 1210 | 2 | 1210 | 2024-07-15 02:42:09.355 <<<<<<<<<<<<<
Time travel?
😞
2024-07-15 02:41:15 Deleting from FISPTAPPGS401DA/TAPd.public.access_user
DELETE FROM public.access_user;
Or do the cron jobs take that long to execute?
The deletes from 26*3 tables (the same 26 tables in three children) took from 02:40:02 to 02:41:47.
Then a bunch of COPY statements run (pg_dump from the federation master, then COPY to the federation children). Must be done in a specific order.
How is modified_on created?
It's updated by the application.
> 1229 | 2 | 1229 | 2024-07-15 08:33:48.443
> 1242 | 2 | 1242 | 2024-07-15 10:29:51.176
> 1260 | 2 | 1260 | 2024-07-15 07:36:21.182
> 1283 | 2 | 1283 | 2024-07-15 09:48:25.214
> 1288 | 2 | 1288 | 2024-07-15 08:10:33.609
> (11 rows)
>
> TAPd=# select user_id, login_id, created_on, modified_on
> TAPd-# from public.access_user
> TAPd-# where user_id = 1210;
> user_id | login_id | created_on | modified_on
> ---------+------------+-------------------------+-------------------------
> 1210 | JORIEUSER3 | 2023-10-20 11:54:24.562 | 2024-07-15 02:42:09.355
> (1 row)
--
Adrian Klaver
adrian.klaver@xxxxxxxxxxx
