Re: pgsql: Fix "base" snapshot handling in logical decoding

Alvaro Herrera <alvherre@2ndquadrant.com> writes:
>> On 2018-Jun-28, Tom Lane wrote:
>>> According to buildfarm member friarbird, and as confirmed here,
>>> the contrib/test_decoding/specs/oldest_xmin.spec test added by this
>>> commit fails under CLOBBER_CACHE_ALWAYS.

> I suppose 60 seconds (isolationtester's default timeout) is just not
> enough time for those machines.  We could increase it to 180 seconds and
> see if that's enough to make them pass ...

What I want to know is why this test is doing a database-wide VACUUM FULL
in the first place.  If that isn't profligate wastage of testing cycles,
why not?

            regards, tom lane