On Thu, Apr 26, 2012 at 1:59 PM, Kenneth Tilton <ktilton@mcna.net> wrote:
On Thu, Apr 26, 2012 at 2:24 PM, Tom Lane <tgl@sss.pgh.pa.us> wrote:
Can you produce a self-contained test case?
I doubt it. Every test iteration I run includes a lot of redefining of functions and triggers all over the map, and it works fine thru dozens of iterations. The wheels seem to come off after a serious refactoring. Nothing is needed to clear the problem except (it seems) close any connections to the DB, so I guess some optimization does not work in the face of sufficient dynamic redefinition.
Suggestion: create a program which attempts to stress-test Postgresql by doing similar things. Even if a single test case does not reliably reproduce the issue, a stress-test might trigger the condition after some time.