| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | Heikki Linnakangas <hlinnaka(at)iki(dot)fi> |
| Cc: | Soumyadeep Chakraborty <soumyadeep2007(at)gmail(dot)com>, Kyotaro Horiguchi <horikyota(dot)ntt(at)gmail(dot)com>, pgsql-hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Refactor pg_rewind code and make it work against a standby |
| Date: | 2020-11-15 06:48:20 |
| Message-ID: | 605973.1605422900@sss.pgh.pa.us |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-hackers |
Not sure if you noticed, but piculet has twice failed the
007_standby_source.pl test that was added by 9c4f5192f:
https://buildfarm.postgresql.org/cgi-bin/show_log.pl?nm=piculet&dt=2020-11-15%2006%3A00%3A11
https://buildfarm.postgresql.org/cgi-bin/show_log.pl?nm=piculet&dt=2020-11-13%2011%3A20%3A10
and francolin failed once:
https://buildfarm.postgresql.org/cgi-bin/show_log.pl?nm=francolin&dt=2020-11-12%2018%3A57%3A33
These failures look the same:
# Failed test 'table content after rewind and insert: query result matches'
# at t/007_standby_source.pl line 160.
# got: 'in A
# in A, before promotion
# in A, after C was promoted
# '
# expected: 'in A
# in A, before promotion
# in A, after C was promoted
# in A, after rewind
# '
# Looks like you failed 1 test of 3.
[11:27:01] t/007_standby_source.pl ...
Dubious, test returned 1 (wstat 256, 0x100)
Failed 1/3 subtests
Now, I'm not sure what to make of that, but I can't help noticing that
piculet uses --disable-atomics while francolin uses --disable-spinlocks.
That leads the mind towards some kind of low-level synchronization
bug ...
regards, tom lane
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