On Mon, Apr 29, 2013 at 9:44 PM, Stephen Frost <sfr...@snowman.net> wrote: > * Kevin Grittner (kgri...@ymail.com) wrote: >> If they modified the heap files that way while the server was >> running, the results would be somewhat unpredictable. If they did >> it while the server was stopped, starting the server and attempting >> to access the matview would generate: > > Right, the point being that they could (ab)use it as a flag to trigger > something to happen. I'd also be worried about failure cases where > files appear to be zero-length.
If you assume that people are going to modify files while the backend is running, nothing we do anywhere is safe. -- Robert Haas EnterpriseDB: http://www.enterprisedb.com The Enterprise PostgreSQL Company -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
