On Mon, May 12, 2014 at 7:10 PM, Greg Stark <st...@mit.edu> wrote:
> Would it be useful to store the current WAL insertion point along with
> the "about to commit" flag so it's effectively a promise that this
> transaction will commit no earlier than XXX. That should allow most
> transactions to decide if those records are visible or not unless
> they're very recent transactions which started in that short window
> while the committing transaction was in the process of committing.

I don't believe this is worth the complexity. The contention window is
extremely short here.

Ants Aasma
Cybertec Schönig & Schönig GmbH
Gröhrmühlgasse 26
A-2700 Wiener Neustadt
Web: http://www.postgresql-support.de

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