Michail Nikolaev <michail.nikol...@gmail.com> wrote: > > Sorry, I missed the fact that your example can be executed inside BEGIN - > > END > > block, in which case minRecoveryPoint won't advance after each command. > > No, the block is not executed as a single transaction, all commands > are separated transactions (see below) > > > Actually I think that a commit record should be replayed > > more often than XLOG_RUNNING_XACTS, shouldn't it? > > Yes, but replaying commit records DOES NOT affect minRecoveryPoint in > almost all cases. > > UpdateMinRecoveryPoint is called by XLogFlush, but xact_redo_commit > calls XLogFlush only in two cases: > * DropRelationFiles is called (some relation are dropped) > * If ForceSyncCommit was used on primary - few “heavy” commands, like > DropTableSpace, CreateTableSpace, movedb, etc. > > But “regular” commit record is replayed without XLogFlush and, as > result, without UpdateMinRecoveryPoint.
ok, I missed this. Thanks for explanation. -- Antonin Houska Web: https://www.cybertec-postgresql.com
