On Sun, Nov 18, 2012 at 4:54 PM, Alexander Korotkov <aekorot...@gmail.com> wrote: > Patch completely changes storage in posting lists and leaf pages of posting > trees. It uses varbyte encoding for BlockNumber and OffsetNumber. > BlockNumber are stored incremental in page. Additionally one bit of > OffsetNumber is reserved for additional information NULL flag. To be able to > find position in leaf data page quickly patch introduces small index in the > end of page.
This sounds like it means that this would break pg_upgrade, about which I'm not too keen. Ideally, we'd like to have a situation where new indexes have additional capabilities, but old indexes are still usable for things that they could do before. I am not sure whether that's a realistic goal. -- Robert Haas EnterpriseDB: http://www.enterprisedb.com The Enterprise PostgreSQL Company -- Sent via pgsql-hackers mailing list (firstname.lastname@example.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers