Re: Disallow cancellation of waiting for synchronous replication

> 25 дек. 2019 г., в 15:28, Maksim Milyutin <milyutinma(at)gmail(dot)com> написал(а):
>
>> Synchronous replication
>> does not guarantee that a committed write is actually on any replica,
>> but it does in general guarantee that a commit has been replicated
>> before sending a response to the client. That's arguably more
>> important because the rest of what the application might depend on the
>> transaction completing and replicating successfully. I don't know of
>> cases other than cancellation in which a response is sent to the
>> client without replication when synchronous replication is enabled.
>
>
> Yes, at query canceling (e.g. by timeout from client driver) client receives response about completed transaction (though with warning which not all client drivers can handle properly) and the guarantee about successfully replicated transaction *violates*.

We obviously need a design discussion here to address the issue. But the immediate question is should we add this topic to January CF items?

Best regards, Andrey Borodin.