Re: Latest version of Hot Standby patch
Simon Riggs <simon@2ndquadrant.com>
From: Simon Riggs <simon@2ndQuadrant.com>
To: Heikki Linnakangas <heikki.linnakangas@enterprisedb.com>
Cc: pgsql-hackers <pgsql-hackers@postgresql.org>
Date: 2008-12-19T11:51:03Z
Lists: pgsql-hackers
On Fri, 2008-12-19 at 10:59 +0200, Heikki Linnakangas wrote: > Simon Riggs wrote: > > * corner case behaviour of backendids - bgwriter writes checkpoint WAL > > records. Has no backendid, but needs a slotid (possibly others) > > Why does bgwriter need a slotid? It doesn't run any transactions. > > > * slotids are assigned once and never changed, so allowing them to be > > used as array lookups directly > > So are backend ids. I'm a little hazy, to be sure. I'm pretty sure there was a blocker, but if I cannot recall it we should assume it doesn't exist. Where are you going with the thought? Remove slotId from each proc and then use backendId to identify the recovery proc? -- Simon Riggs www.2ndQuadrant.com PostgreSQL Training, Services and Support