Re: Hot Standby startup with overflowed snapshots

On Thu, Oct 27, 2011 at 5:26 PM, Chris Redekop <chris@replicon.com> wrote:

> Thanks for the patch Simon, but unfortunately it does not resolve the issue
> I am seeing.  The standby still refuses to finish starting up until long
> after all clients have disconnected from the primary (>10 minutes).  I do
> see your new log statement on startup, but only once - it does not repeat.
>  Is there any way for me to see  what the oldest xid on the standby is via
> controldata or something like that?  The standby does stream to keep up with
> the primary while the primary has load, and then it becomes idle when the
> primary becomes idle (when I kill all the connections)....so it appears to
> be current...but it just doesn't finish starting up
> I'm not sure if it's relevant, but after it has sat idle for a couple
> minutes I start seeing these statements in the log (with the same offset
> every time):
> DEBUG:  skipping restartpoint, already performed at 9/95000020

OK, so it looks like there are 2 opportunities to improve, not just one.

Try this.

-- 
 Simon Riggs                   http://www.2ndQuadrant.com/
 PostgreSQL Development, 24x7 Support, Training & Services