On 4/21/12 2:40 PM, Jeff Davis wrote:
> If we do use WAL for hint bit updates, that has an impact on Hot
> Standby, because HS can't write WAL. So, it would seem that HS could not
> set hint bits.
If we're WAL-logging hint bits, then the standby would be receiving
them, so it doesn't *need* to write them.
However, I suspect that WAL-logging hint bits would be prohibitively
expensive.
--
Josh Berkus
PostgreSQL Experts Inc.
http://pgexperts.com