| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | Andres Freund <andres(at)anarazel(dot)de> |
| Cc: | pgsql-hackers(at)postgresql(dot)org, mark(at)2ndquadrant(dot)com |
| Subject: | Re: Odd 9.4, 9.3 buildfarm failure on s390x |
| Date: | 2018-09-28 19:26:14 |
| Message-ID: | 15043.1538162774@sss.pgh.pa.us |
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| Lists: | pgsql-hackers |
Andres Freund <andres(at)anarazel(dot)de> writes:
> It seems Mark started a new buildfarm animal on s390x. It shows a pretty
> odd failure on 9.3 and 9.4, but *not* on newer animals:
No, lumpsucker is showing the same failure on 9.5 as well. I suspect
that the reason 9.6 and up are OK is that 9.6 is where we introduced
the abbreviated-sort-key machinery. IOW, the problem exists in the
old-style UUID sort comparator but not the new one. Which is pretty
darn odd, because the old-style comparator is just memcmp(). How
could that be broken without causing lots more issues?
regards, tom lane
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