On Wed, Aug 1, 2018 at 3:04 AM, Peter Eisentraut
<peter.eisentraut@2ndquadrant.com> wrote:
> On 31/07/2018 23:25, Tom Lane wrote:
>> Peter Eisentraut <peter.eisentraut@2ndquadrant.com> writes:
>>> On 27/07/2018 16:16, Robert Haas wrote:
>>>> I also suspect that an appropriate fix might be to ensure that
>>>> AcceptInvalidationMessages() is run at least once at the beginning of
>>>> parse analysis.
>>
>>> Why don't we just do that?
>>
>> Don't we do that already? Certainly it should get run in advance of
>> any relation name lookup. There is one at transaction start also,
>> if memory serves.
>
> Right, we do it at transaction start and when opening a relation with a
> lock that you don't already have. Which I suppose in practice is almost
> equivalent to at least once per command, but you can construct cases
> where subsequent commands in a transaction use the all same tables as
> the previous commands, in which case they don't run AIM() again.
Right. If nobody sees a reason not to change that, I think we should.
It would make the behavior more predictable with, I hope, no real
loss.
--
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
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