On 20.04.2021 19:38, Tomas Vondra wrote:
On 4/20/21 6:23 PM, Aleksander Alekseev wrote:
Hi Ondřej,
Thanks for the report. It seems to be a clear violation of what is
promised in the docs. Although it's unlikely that someone implemented
an application which deals with important data and "pressed Ctr+C" as
it's done in psql. So this might be not such a critical issue after
all. BTW what version of PostgreSQL are you using?
Which part of the docs does this contradict?
I think, Aleksandr refers to the following phrase in docs:
"The guarantee we offer is that the application will not receive
explicit acknowledgment of the successful commit of a transaction until
the WAL data is known to be safely received by all the synchronous
standbys." [1]
And IMO confusing here regards to the notion of `successful commit`.
Does warning attached to received commit message make it not
*successful*? I think we have to explicitly mention cases about
cancellation and termination session in docs to avoid ambiguity in
understanding of phrase above.
1.
https://www.postgresql.org/docs/current/warm-standby.html#SYNCHRONOUS-REPLICATION-HA
--
Regards,
Maksim Milyutin
