Michael Paquier wrote:
> Here using pg_xlog_replay_resume() is not the correct solution because
> this would cause the node to finish recovery before we want it to, and
> so is recovery_target_action = 'promote'. If we look at the test, it
> is doing the following when getting the TXID that is used as recovery
> target:
> $node_master->safe_psql('postgres',
> "INSERT INTO tab_int VALUES (generate_series(1001,2000))");
> my $recovery_txid =
> $node_master->safe_psql('postgres', "SELECT txid_current()");
> my $lsn2 =
> $node_master->safe_psql('postgres', "SELECT pg_current_xlog_location();");
> What I think we had better do is reverse the calls
> pg_current_xlog_location() and txid_current() so as we are sure that
> the LSN we track for replay is lower than the real target LSN. The
> same problem exists when defining the timestamp target.
>
> The patch attached does that,
Why not capture both items in a single select, such as in the attached
patch?
--
Álvaro Herrera http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
