Re: BUG #17362: Error "could not find block containing chunk" when using index with icu collation on CentOS 7

From: Peter Geoghegan <pg(at)bowt(dot)ie>
To: eronenp(at)gmail(dot)com, PostgreSQL mailing lists <pgsql-bugs(at)lists(dot)postgresql(dot)org>
Cc: Peter Eisentraut <peter(dot)eisentraut(at)enterprisedb(dot)com>
Subject: Re: BUG #17362: Error "could not find block containing chunk" when using index with icu collation on CentOS 7
Date: 2022-01-11 22:19:38
Message-ID: CAH2-Wz=K4AZqQentZ0VgYjk3RpRA8n6oVrt2Cv0b977dA4qrDQ@mail.gmail.com
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On Tue, Jan 11, 2022 at 3:16 AM PG Bug reporting form
<noreply(at)postgresql(dot)org> wrote:
> When I query a table containing certain Unicode data, using an index that
> has certain collation, I get error message "could not find block containing
> chunk". This is fully reproducible on CentOS 7 using the official RPM. (I
> could not reproduce this on Oracle Linux 8, though):

It looks like you're probably not using utf8 as your database
encoding, based on the stacktrace -- even though I would expect that
on your ICU version. What does "show server_encoding;" show you when
run from psql?

My guess is that you can temporarily work around the bug (which looks
like a bug in our !HAVE_UCOL_STRCOLLUTF8 ICU support) by making sure
to use UTF-8 as the server encoding.

--
Peter Geoghegan

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