On Sun, 15 Dec 2024 at 10:00, Alexander Lakhin <exclus...@gmail.com> wrote:
> shows that the subscription and publication tests are not concurrent-safe,
> because modifying the same pg_database entry might fail with the "tuple
> concurrently updated" error.

This seems related to this thread about concurrency issues in
ALTER/DROP SUBSCRIPTION[1], except that this is for GRANT/REVOKE it
seems.

The easiest way to address the flakiness of this test though is
probably to just don't run these tests in in parallel. See attached.

[1]: 
https://www.postgresql.org/message-id/flat/HE1PR8303MB0075BF78AF1BE904050DA16BF7729%40HE1PR8303MB0075.EURPRD83.prod.outlook.com

Attachment: v1-0001-Don-t-run-flaky-tests-in-parallel-with-eachother.patch
Description: Binary data

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