Thread: pgsql: Stablize tests added in 3abe9dc188.

pgsql: Stablize tests added in 3abe9dc188.

From
Amit Kapila
Date:
Stablize tests added in 3abe9dc188.

The problem is that after the ALTER SUBSCRIPTION tap_sub SET PUBLICATION
command, we didn't wait for the new walsender to start on the publisher.
Immediately after ALTER, we performed Insert and expected it to replicate.
However, the replication could start from a point after the INSERT location,
and as the subscription isn't copying initial data, we could miss such an
Insert.

The fix is to wait for connection to be established between publisher and
subscriber before starting DML operations that are expected to replicate.

As per CI.

Reported-by: Andres Freund <andres@anarazel.de>
Author: Hayato Kuroda <kuroda.hayato@fujitsu.com>
Discussion: https://postgr.es/m/CALDaNm2ms1deM5EYNLFEfESv_Kw=Y4AiTB0LP=qGS-UpFwGbPg@mail.gmail.com

Branch
------
master

Details
-------
https://git.postgresql.org/pg/commitdiff/474d7a1fd858d5ee138cf4504dcd93a9a3123a7d

Modified Files
--------------
src/test/subscription/t/007_ddl.pl | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)


Re: pgsql: Stablize tests added in 3abe9dc188.

From
Amit Kapila
Date:
On Fri, Mar 28, 2025 at 11:18 AM Amit Kapila <akapila@postgresql.org> wrote:
>
> Stablize tests added in 3abe9dc188.
>
> The problem is that after the ALTER SUBSCRIPTION tap_sub SET PUBLICATION
> command, we didn't wait for the new walsender to start on the publisher.
> Immediately after ALTER, we performed Insert and expected it to replicate.
> However, the replication could start from a point after the INSERT location,
> and as the subscription isn't copying initial data, we could miss such an
> Insert.
>
> The fix is to wait for connection to be established between publisher and
> subscriber before starting DML operations that are expected to replicate.
>
> As per CI.
>
> Reported-by: Andres Freund <andres@anarazel.de>
> Author: Hayato Kuroda <kuroda.hayato@fujitsu.com>
> Discussion: https://postgr.es/m/CALDaNm2ms1deM5EYNLFEfESv_Kw=Y4AiTB0LP=qGS-UpFwGbPg@mail.gmail.com
>

By mistake, I added a wrong discussion link. The correct one is
https://postgr.es/m/ksxbayuk5hgqdsryjxqkbnjyvk6amd2jf5tui565ex6vazglls@jva4njirno4u

--
With Regards,
Amit Kapila.