On 10/30/2017 09:03 PM, Tom Lane wrote: > Michael Paquier <michael.paqu...@gmail.com> writes: >> b1328d78f is close enough, but per what I see that's actually not >> true. I have been able to reproduce the problem, which shows up within >> a window of 2-4 minutes. Still sometimes it can take way longer, and I >> spotted one test where it took 15 minutes to show up... So, bisecting >> with a test that looks for core files for 20 minutes, I am seeing that >> the following commit is actually at fault: > >> commit 24992c6db9fd40f342db1f22747ec9e56483796d >> Author: Tom Lane <t...@sss.pgh.pa.us> >> Date: Fri Sep 9 19:00:59 2016 -0400 > >> Rewrite PageIndexDeleteNoCompact into a form that only deletes 1 tuple. > > [ scratches head ... ] Not sure how that could've introduced any > problems? Will look. >
Not sure, but I can confirm Michael's findings - I've been unable to reproduce the issue on 1a4be103a5 even after 20 minutes, and on 24992c6db9 it failed after only 2. regards -- Tomas Vondra http://www.2ndQuadrant.com PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
