Horton

Re: Standbys, txid_current_snapshot, wraparound

Marko Kreen <markokr@gmail.com>

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From: Marko Kreen <markokr@gmail.com>
To: Simon Riggs <simon@2ndQuadrant.com>
Cc: Daniel Farina <daniel@heroku.com>, pgsql-hackers <pgsql-hackers@postgresql.org>, Andrey Velikoredchanin <uncleandyv@gmail.com>
Date: 2012-03-29T14:04:33Z
Lists: pgsql-hackers 
On Thu, Mar 29, 2012 at 02:46:23PM +0100, Simon Riggs wrote:
> On Thu, Mar 29, 2012 at 12:06 PM, Simon Riggs <simon@2ndquadrant.com> wrote:
> > Patch coming in a few hours.
> 
> This is more straightforward than I was thinking. We just need to
> initialise XLogCtl at the right place.

Looks good to me.  That should fix the problem with standbys then.


Next question: how can flipping archive_mode on and off,
with restarts, near wraparound point, break epoch on master?

  http://lists.pgfoundry.org/pipermail/skytools-users/2012-March/001609.html

Any ideas?

Could WAL playback from backend with different archive_mode setting
cause it somehow?

-- 
marko