At Thu, 28 May 2020 11:57:23 +0300, Vladimir Sitnikov <sitnikov.vladimir@gmail.com> wrote in > Kyotaro>It seems to me that that crash means Pgjdbc is initiating a logical > Kyotaro>replication connection to start physical replication. > > Well, it used to work previously, so it might be a breaking change from the > client/application point of view.
Mmm. It is not the proper way to use physical replication and it's totally accidental that that worked (or even it might be a bug). The documentation is saying as the follows, as more-or-less the same for all versions since 9.4.
> To initiate streaming replication, the frontend sends the replication > parameter in the startup message. A Boolean value of true (or on, yes, > 1) tells the backend to go into physical replication walsender mode, > wherein a small set of replication commands, shown below, can be > issued instead of SQL statements. > > Passing database as the value for the replication parameter instructs > the backend to go into logical replication walsender mode, connecting > to the database specified in the dbname parameter. In logical > replication walsender mode, the replication commands shown below as > well as normal SQL commands can be issued.
regards.
While the documentation does indeed say that there is quite a bit of additional confusion added by: