Re: WIP patch for parallel pg_dump

Kevin Grittner <kevin.grittner@wicourts.gov>

From: "Kevin Grittner" <Kevin.Grittner@wicourts.gov>

To: "Tom Lane" <tgl@sss.pgh.pa.us>

Cc: "Greg Smith" <greg@2ndquadrant.com>, "Andrew Dunstan" <andrew@dunslane.net>, "Heikki Linnakangas" <heikki.linnakangas@enterprisedb.com>, "Robert Haas" <robertmhaas@gmail.com>, "Joachim Wieland" <joe@mcknight.de>, "pgsql-hackers" <pgsql-hackers@postgresql.org>

Date: 2010-12-06T18:28:39Z

Lists: pgsql-hackers

Tom Lane <tgl@sss.pgh.pa.us> wrote:
> "Kevin Grittner" <Kevin.Grittner@wicourts.gov> writes:
 
>> Surely you can predict that any snapshot is no larger than a fairly
>> small fixed portion plus sizeof(TransactionId) * MaxBackends?
> 
> No.  See subtransactions.
 
Subtransactions are included in snapshots?
 
-Kevin