Re: ALTER TABLE lock strength reduction patch is unsafe Reply-To:

On Tue, Mar 4, 2014 at 8:08 PM, Tom Lane <tgl@sss.pgh.pa.us> wrote:
> CREATE INDEX CONCURRENTLY, otoh, already did break pg_dump,
> and we had to hack things to fix it; see commit
> 683abc73dff549e94555d4020dae8d02f32ed78b.

Well pg_dump was only broken in that there was a new catalog state to
deal with. But the commit you linked to was fixing pg_upgrade which
was broken because the on-disk schema was then out of sync with what
pg_dump would generate. But that should only matter for creating or
deleting whole relations.
-- 
greg