error context for vacuum to include block number

From: Justin Pryzby <pryzby(at)telsasoft(dot)com>
To: pgsql-hackers(at)postgresql(dot)org
Cc: Andres Freund <andres(at)anarazel(dot)de>
Subject: error context for vacuum to include block number
Date: 2019-11-20 21:06:00
Message-ID: 20191120210600.GC30362@telsasoft.com
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On Wed, Aug 07, 2019 at 04:51:54PM -0700, Andres Freund wrote:
https://www.postgresql.org/message-id/20190807235154.erbmr4o4bo6vgnjv%40alap3.anarazel.de
| Ugh :(
|
| We really need to add a error context to vacuumlazy that shows which
| block is being processed.

I eeked out a minimal patch.

I renamed "StringInfoData buf", since it wasn't nice to mask it by
"Buffer buf".

postgres=# SET statement_timeout=99;vacuum t;
SET
2019-11-20 14:52:49.521 CST [6319] ERROR: canceling statement due to statement timeout
2019-11-20 14:52:49.521 CST [6319] CONTEXT: block 596
2019-11-20 14:52:49.521 CST [6319] STATEMENT: vacuum t;

Justin

Attachment Content-Type Size
v1-0001-vacuum-errcontext-to-show-block-being-processed.patch text/x-diff 4.3 KB

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