Hot standby, freezing

On Wed, 2009-11-11 at 12:35 +0200, Heikki Linnakangas wrote:

While reading through the patch for what must be the 100th time by now,

:-)

it occurred to me that this comment in heap_xlog_freeze:

+       /*
+        * Freezing tuples does not require conflict processing
+        */

is plain wrong. In the master, we can freeze the xmin of a tuple that's
not yet visible to all read-only transactions in the standby. We do need
conflict processing there.

I agree. Hmph, I wonder why I thought otherwise?

--
Simon Riggs www.2ndQuadrant.com