Fujii Masao <masao.fu...@gmail.com> writes: > Okay, so probably we need to change WAL replay of TRUNCATE so that > the index file is truncated to one containing only meta page instead of > empty one. That is, the WAL replay of TRUNCATE would need to call > index_build() after smgrtruncate() maybe.
That seems completely unworkable. For one thing, index_build would expect to be able to do catalog lookups, but we can't assume that the catalogs are in a good state yet. I think the responsibility has to be on the WAL-writing end to emit WAL instructions that lead to a correct on-disk state. Putting complex behavior into the reading side is fundamentally misguided. regards, tom lane -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers