Re: Table not cleaning up drom dead tuples

On Tue, Mar 14, 2017 at 5:09 AM, Антон Тарабрин <tarabanton(at)gmail(dot)com>
wrote:

> Good day. It seems that we have some strange case of VACUUM malfunction
> and table bloating.
>
> PostgreSQL 9.5.3
>

Are you using replication slots?

See this, fixed in 9.5.5:

commit de396a1cb34626619ddc6fb9dec6d12abee8b589
Author: Andres Freund <andres(at)anarazel(dot)de>
Date: Wed Aug 17 13:15:03 2016 -0700

Properly re-initialize replication slot shared memory upon creation.

Slot creation did not clear all fields upon creation. After start the
memory is zeroed, but when a physical replication slot was created in
the shared memory of a previously existing logical slot, catalog_xmin
would not be cleared. That in turn would prevent vacuum from doing its
duties.

Cheers,

Jeff