On Tue, 2021-04-20 at 18:49 +0100, Ondřej Žižka wrote: > tecmint=# select * from a; --> LAN on sync replica is OK > id > ---- > 1 > (1 row) > > tecmint=# insert into a values (2); ---> LAN on sync replica is DOWN and > insert is waiting. During this time kill the background process on the > PostgreSQL server for this session > WARNING: canceling the wait for synchronous replication and terminating > connection due to administrator command > DETAIL: The transaction has already committed locally, but might not > have been replicated to the standby. > server closed the connection unexpectedly > This probably means the server terminated abnormally > before or while processing the request. > The connection to the server was lost. Attempting reset: Succeeded. > > tecmint=# select * from a; > id > ---- > 1 > 2 > (2 rows)
It is well known that synchronous replication is sublect to that problem, since it doesn't use the two-phase commit protocol.
What surprises me is that this is a warning. In my opinion it should be an error.
