On 15 February 2015 at 00:19, Kevin Grittner <kgri...@ymail.com> wrote:

> What they wanted was what happened in the other database product --
> if a snapshot got sufficiently old that cleaning up the MVCC data
> was a problem *and* the snapshot was used again *and* it read a
> page which had been modified far enough back that it was not
> possible to return correct data, then they wanted to receive a
> "snapshot too old" error.  I wrote a patch to do that...

So, please lets see the patch. It seems useful for core Postgres.

-- 
 Simon Riggs                   http://www.2ndQuadrant.com/
 PostgreSQL Development, 24x7 Support, RemoteDBA, Training & Services


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