Heikki Linnakangas <hlinnakangas@vmware.com> wrote:
> Well, it's fairly harsh if the feature isn't working as
> advertised.
Right -- there are people counting on serializable transaction to
avoid data corruption (creation of data which violates the business
rules which they believe are being enforced). A tuple freeze at
the wrong moment could currently break that. The patch allows the
guarantee to hold. The fact that this bug is only seen if there is
a very-long-running transaction or if VACUUM FREEZE is run while
data-modifying transactions are active does not eliminate the fact
that without this patch data can be corrupted.
--
Kevin Grittner
EDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company
