Excerpts from Tom Lane's message of sáb jul 31 09:57:13 -0400 2010: > So far as I can see, it's impossible to handle this situation when > examining only one TID per stream with no lookahead. Choosing to > advance the second stream would obviously fail in many other cases, > so there is no correct action. The only reasonable way out is to > forbid the case --- that is, decree that a keystream may *not* > contain both lossy and nonlossy pointers to the same page.
Would it make sense to order the streams differently? I mean, what if whole-page pointers in the lossy stream are processed before regular ones? (I am thoroughly unfamiliar with this stuff, so forgive me if I've gotten the concepts and terminology all wrong) -- Álvaro Herrera <alvhe...@commandprompt.com> The PostgreSQL Company - Command Prompt, Inc. PostgreSQL Replication, Consulting, Custom Development, 24x7 support -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
