On Sun, 2009-11-15 at 21:20 +0200, Heikki Linnakangas wrote: > Simon Riggs wrote: > > On Sun, 2009-11-15 at 20:30 +0200, Heikki Linnakangas wrote: > > > >> The LSN doesn't help there, because when an itemid is marked as dead, > >> the LSN is not updated. > > > > I was thinking we could update the index block LSN without writing WAL > > using the LSN of the heap block that leads to the killed tuple. > > That can be before the cleanup record we write before we start the index > vacuum.
Oh well. Strike 1. But the technique sounds OK, we just need to get the LSN of a HeapInfo record from somewhere, say, index metapage. Sounds like we need to do something similar with the xid. -- Simon Riggs www.2ndQuadrant.com -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
