Cannot declare class Wikimedia\MWConfig\XWikimediaDebug, because the name is already in use in XWikimediaDebug.php
Closed, ResolvedPublicPRODUCTION ERROR
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	• mmodell
	Sep 1 2021, 3:54 AM

Description

Error

mwversion: undefined
reqId: 00a2d6fe-f25e-4cd6-9421-d8a4028a0945
Find reqId in Logstash
Find normalized_message in Logstash

normalized_message

Cannot declare class Wikimedia\MWConfig\XWikimediaDebug, because the name is already in use in XWikimediaDebug.php

exception.trace

#0 /srv/mediawiki/wmf-config/profiler.php(12): require_once()
#1 /srv/mediawiki/wmf-config/PhpAutoPrepend.php(30): require_once()

Impact

a ton of log spam since 02:00 UTC today (~10 identical errors logged per minute)

Notes

the errors are all coming from parsoid servers

Details

Request URL: https://en.wikipedia.org/wiki/Special:BlankPage

Related Objects
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		Status	Subtype	Assigned	Task
		Resolved	Release	• mmodell	T281162 1.37.0-wmf.21 deployment blockers
		Resolved	PRODUCTION ERROR	Krinkle	T290120 Cannot declare class Wikimedia\MWConfig\XWikimediaDebug, because the name is already in use in XWikimediaDebug.php

Event Timeline

• mmodell created this task.Sep 1 2021, 3:54 AM

Restricted Application added a project: Performance-Team. · View Herald TranscriptSep 1 2021, 3:54 AM

Restricted Application added a subscriber: Aklapper. · View Herald Transcript

• mmodell triaged this task as Unbreak Now! priority.Sep 1 2021, 4:14 AM

• mmodell updated the task description. (Show Details)

• mmodell added a project: Parsoid.

• mmodell added a parent task: T281162: 1.37.0-wmf.21 deployment blockers.

Zabe subscribed.Sep 1 2021, 8:12 AM

Mentioned in SAL (#wikimedia-operations) [2021-09-01T11:19:52Z] <Krinkle> effie restarted php-fpm on parse2007.codfw.wmnet, ref T290120.

They're all from a single host, too, parse2007, which I believe fits the description of opcache bugs, given there appears to be nothing unusual about how this class is defined or loaded.

We have seen this once or twice before as previously reported at T245183#6212267. A php-fpm restart should take care of it. Ref T266055.

Screenshot 2021-09-01 at 12.10.38.png (1×2 px, 291 KB)

Krinkle closed this task as Resolved.Sep 1 2021, 11:20 AM

Krinkle claimed this task.

Krinkle moved this task from Untriaged to Sep 2021 on the Wikimedia-production-error board.Sep 5 2021, 12:25 AM

Mentioned in SAL (#wikimedia-operations) [2021-09-28T12:10:19Z] <Lucas_WMDE> lucaswerkmeister-wmde@wtp1026:~$ sudo -u mwdeploy /usr/local/sbin/restart-php7.2-fpm # attempt to solve a recurrence of T290120, but it failed

In T290120#7383350, @Stashbot wrote:

Mentioned in SAL (#wikimedia-operations) [2021-09-28T12:10:19Z] <Lucas_WMDE> lucaswerkmeister-wmde@wtp1026:~$ sudo -u mwdeploy /usr/local/sbin/restart-php7.2-fpm # attempt to solve a recurrence of T290120, but it failed

(This was since resolved. The correct command is sudo -i /usr/local/sbin/restart-php7.2-fpm. Sorry for the noise here.)

	F34627683: Screenshot 2021-09-01 at 12.10.38.png
	Sep 1 2021, 11:22 AM

Cannot declare class Wikimedia\MWConfig\XWikimediaDebug, because the name is already in use in XWikimediaDebug.phpClosed, ResolvedPublicPRODUCTION ERRORActions