On Sat, Feb 13, 2016 at 7:29 AM, Kouhei Kaigai <kai...@ak.jp.nec.com> wrote:
>> I suppose there's no theoretical reason why the buffer couldn't go
>> from all-visible to not-all-visible and back to all-visible again all
>> during the time you are copying it.
> The backend process that is copying the data to GPU has a transaction
> in-progress (= not committed). Is it possible to get the updated buffer
> page back to the all-visible state again?
> I expect that in-progress transactions works as a blocker for backing
> to all-visible. Right?

Yeah, probably.

Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company

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