On Mon, Mar 04, 2019 at 01:37:30PM -0800, Perumal Raj wrote: > I could see bunch of functions under reorg schema.
Those functions are the ones preventing you from upgrading. You should drop schema pg_reorg cascade. You can run it in a transaction first to see what it will drop. But after the upgrade, you can CREATE EXTENSION pg_repack, which is a fork of pg_reorg, which is itself no longer maintained.