On Wed, Oct 19, 2016 at 08:17:46PM -0400, Robert Haas wrote:
> On Wed, Oct 19, 2016 at 12:59 PM, Bruce Momjian <br...@momjian.us> wrote:
> > Uh, vacuum_defer_cleanup_age sets an upper limit on how long, in terms
> > of xids, that a standby query can run before cancel, like
> > old_snapshot_threshold, no?
> No, not really.  It affects the behavior of the master, not the standby.

But it controls when/if cancels happen on the standby.

  Bruce Momjian  <br...@momjian.us>        http://momjian.us
  EnterpriseDB                             http://enterprisedb.com

+ As you are, so once was I.  As I am, so you will be. +
+                      Ancient Roman grave inscription +

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