On Fri, Sep 22, 2017 at 1:19 PM, Robert Haas <robertmh...@gmail.com> wrote:
> On Fri, Sep 22, 2017 at 3:39 PM, Jeff Janes <jeff.ja...@gmail.com> wrote: > > It turns out it is not new in pg10. I spotted in the log file only by > > accident while looking for something else. Now that I am looking for > it, I > > do see it in 9.6 as well. > > So I guess the next question is whether it also shows up if you initdb > with 9.4.latest and then run the same test. > git bisect shows that it shows up in 9.5, at this commit: commit bd7c348d83a4576163b635010e49dbcac7126f01 Author: Andres Freund <and...@anarazel.de> Date: Sat Sep 26 19:04:25 2015 +0200 Rework the way multixact truncations work. The patches which enable the crashes and the rapid consumption of xid and multixact both need a little adjustment from the 10rc1 versions, so I'm attaching a combined patch that applies to bd7c348d83. Not really sure what the next step is here. I could promote the ereport(LOG...) to a PANIC to get a core dump, but I don't think that would help because presumably the problem occurred early, when the truncation was done, not when it was detected. Cheers, Jeff
crash_instrument.patch
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