Re: How is this possible "publication does not exist"

On Wed, Aug 11, 2021 at 4:57 PM Dave Cramer <davecramer(at)gmail(dot)com> wrote:
>
> On Wed, 11 Aug 2021 at 07:24, Amit Kapila <amit(dot)kapila16(at)gmail(dot)com> wrote:
>>
>> On Wed, Aug 11, 2021 at 1:18 AM Dave Cramer <davecramer(at)gmail(dot)com> wrote:
>> >
>> > Reviving this thread
>> >
>> > 2021-08-10 19:05:09.096 UTC [3738] LOG: logical replication apply worker for subscription "sub_mycluster_alltables" has started
>> > 2021-08-10 19:05:09.107 UTC [3739] LOG: logical replication table synchronization worker for subscription "sub_mycluster_alltables", table "t_random" has started
>> > 2021-08-10 19:05:12.222 UTC [3739] LOG: logical replication table synchronization worker for subscription "sub_mycluster_alltables", table "t_random" has finished
>> > 2021-08-10 19:05:14.806 UTC [3738] ERROR: could not receive data from WAL stream: ERROR: publication "sub_mycluster_alltables" does not exist
>> > CONTEXT: slot "sub_mycluster_alltables", output plugin "pgoutput", in the change callback, associated LSN 0/4015DF0
>> > 2021-08-10 19:05:14.811 UTC [175] LOG: background worker "logical replication worker" (PID 3738) exited with exit code 1
>> >
>> >
>> > select * from pg_publication;
>> > -[ RECORD 1 ]+------------------------
>> > oid | 16415
>> > pubname | sub_mycluster_alltables
>> > pubowner | 10
>> > puballtables | t
>> > pubinsert | t
>> > pubupdate | t
>> > pubdelete | t
>> > pubtruncate | t
>> >
>>
>> By any chance, did you dropped and recreated this publication as
>> mentioned in your first email? If so, I think this can happen because
>> of our use of historical snapshots to consult system catalogs.
>
>
> In this case, no.
>
> I am suspecting this error comes from pgoutput though.
>

I think it is and the context is generated via
output_plugin_error_callback. Is this reproducible for you and if so,
can you share a test case or some steps to reproduce this? Does this
work and suddenly start giving errors or it happens the very first
time you tried to set up publication/subscription? I think some more
details are required about your setup and steps to analyze this
problem. You might want to check publication-side logs but not sure if
get any better clue there.

--
With Regards,
Amit Kapila.