Re: Crash report for some ICU-52 (debian8) COLLATE and work_mem values

From: "Daniel Verite" <daniel(at)manitou-mail(dot)org>
To: "Peter Eisentraut" <peter(dot)eisentraut(at)2ndquadrant(dot)com>
Cc: "Peter Geoghegan" <pg(at)bowt(dot)ie>,"Tom Lane" <tgl(at)sss(dot)pgh(dot)pa(dot)us>,"PostgreSQL mailing lists" <pgsql-bugs(at)postgresql(dot)org>
Subject: Re: Crash report for some ICU-52 (debian8) COLLATE and work_mem values
Date: 2017-08-07 17:39:38
Message-ID: 3bf43be1-de52-4b75-93f1-6223cc0f8ae4@manitou-mail.org
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Peter Eisentraut wrote:

> In my testing, there are no crashes in ICU 51 and ICU 53, so we could
> restrict this workaround to version 52 specifically. Perhaps someone
> else can confirm my test results.

I'm testing all collations with ICU-51.2 with the same data as previously,
and I just see it crashing at the 103th and a few other az-* after that:

2017-08-07 19:09:26.538 CEST [59353] LOG: server process (PID 60458) was
terminated by signal 11: Segmentation fault
2017-08-07 19:09:26.538 CEST [59353] DETAIL: Failed process was running:
select count(distinct wordtext collate "az-Latn-AZ-u-co-search-x-icu") from
words_test
2017-08-07 19:09:26.538 CEST [59353] LOG: terminating any other active
server processes
2017-08-07 19:09:26.538 CEST [60316] WARNING: terminating connection because
of crash of another server process

I don't have core files for this run but that's probably enough to say
that ICU-51 is no good for us.

Best regards,
--
Daniel Vérité
PostgreSQL-powered mailer: http://www.manitou-mail.org
Twitter: @DanielVerite

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