On Thu, Mar 1, 2012 at 12:42 PM, Josh Berkus <j...@agliodbs.com> wrote:
>>> And how would a DBA know that?
>> We'd add a column to pg_class that tracks which page version is in use
>> for each relation.
> So a relation can't have some pages in Version 9.2, and other pages in
> version 9.3?  How will this work for 2TB tables?

Not very well, but better than Tom's proposal to require upgrading the
entire cluster in a single off-line operation.

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

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