> From: Noah Misch <n...@leadboat.com> > > - the patch is missing the "send all table pages to the > > standby" part; is there some code I can use as base? > > Nothing comes to mind as especially similar. > > > I guess I have to generate some special log type that > > is only "played" by standby servers. > > What you described in your followup mail seemed reasonable.
So, it's ok to have a log item that is replayed only if WalRcvInProgress() is true? Is it a correct approach? I couldn't find any other way to find out if we are in a standby or a master... > > - on the standby, the commit part should be played as it > > is on the master (that is, removing the INIT fork). > > The abort case is different though: it would mean > > doing nothing on the master, while removing every forks > > but the INIT fork on the standby. > > Would it be ok to add to xl_xact_abort a new array of > > RelFileNode(s), where for each one at abort all the forks, > > except the init fork, have to be deleted by the standby > > (while the master shouldn't do anything with them)? > > I bet there's a cleaner solution... > > Your "use less space in xl_xact_commit patch" seems to be going in a good > direction here. It would probably also be okay to do a >ResetUnloggedRelations() > on the standby at every abort of a transaction that had started an UNLOGGED -> > LOGGED conversion. That is, just a flag might be enough. ok, but that would mean that a transaction that aborts a conversion would try to reset all unlogged relations (traversing all the FS)... I don't know if that's acceptable performance-wise. -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
