Wikimedia\Assert\PreconditionException: Precondition failed: Cannot end a span that has not been started
Closed, ResolvedPublicPRODUCTION ERROR
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Authored By

	• jnuche
	Mar 19 2025, 9:28 AM

Description

Error

service.version: 1.44.0-wmf.21
trace.id: f9d02dd0-b953-98cc-a9f8-102c683c3107
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labels.normalized_message

[{reqId}] {exception_url}   Wikimedia\Assert\PreconditionException: Precondition failed: Cannot end a span that has not been started

Frame	Location	Call
from	/srv/mediawiki/php-1.44.0-wmf.21/vendor/wikimedia/assert/src/Assert.php(49)
#0	/srv/mediawiki/php-1.44.0-wmf.21/includes/libs/telemetry/Span.php(77)	Wikimedia\Assert\Assert::precondition(bool, string)
#1	/srv/mediawiki/php-1.44.0-wmf.21/includes/libs/telemetry/Span.php(31)	Wikimedia\Telemetry\Span->end()
#2	/srv/mediawiki/rpc/RunSingleJob.php(60)	Wikimedia\Telemetry\Span->__destruct()
#3	{main}

Notes

Started with 1.44.0-wmf.21. Constant stream of errors. Multiple wikis affected: https://logstash.wikimedia.org/goto/5977d246d7b3896df80f662e94548491

Possible root cause: https://gerrit.wikimedia.org/r/c/mediawiki/extensions/EventBus/+/1127017

Details

Request URL: https://mw-jobrunner.discovery.wmnet/rpc/RunSingleJob.php

Related Changes in Gerrit:

	Subject	Repo	Branch	Lines +/-
	JobExecutor: Activate wrapping span	mediawiki/extensions/EventBus	wmf/1.44.0-wmf.21	+75 -1
	JobExecutor: Activate wrapping span	mediawiki/extensions/EventBus	master	+75 -1

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		Status	Subtype	Assigned	Task
		Resolved	Release	• jnuche	T386216 1.44.0-wmf.21 deployment blockers
		Resolved	PRODUCTION ERROR	• mszabo	T389331 Wikimedia\Assert\PreconditionException: Precondition failed: Cannot end a span that has not been started

Event Timeline

• jnuche created this task.Mar 19 2025, 9:28 AM

• jnuche triaged this task as Unbreak Now! priority.

Restricted Application added a subscriber: Aklapper. · View Herald TranscriptMar 19 2025, 9:28 AM

• jnuche added a parent task: T386216: 1.44.0-wmf.21 deployment blockers.Mar 19 2025, 9:31 AM

• jnuche updated the task description. (Show Details)Mar 19 2025, 9:41 AM

• jnuche added subscribers: CDanis, • mszabo.

Aklapper added a project: Event-Platform.Mar 19 2025, 9:57 AM

• mszabo changed the task status from Open to In Progress.Mar 19 2025, 10:25 AM

Change #1129209 had a related patch set uploaded (by Máté Szabó; author: Máté Szabó):

[mediawiki/extensions/EventBus@master] JobExecutor: Activate wrapping span

https://gerrit.wikimedia.org/r/1129209

gerritbot added a project: Patch-For-Review.Mar 19 2025, 10:41 AM

Maintenance_bot added a project: Data-Engineering.Mar 19 2025, 11:30 AM

Change #1129221 had a related patch set uploaded (by Kosta Harlan; author: Máté Szabó):

[mediawiki/extensions/EventBus@wmf/1.44.0-wmf.21] JobExecutor: Activate wrapping span

https://gerrit.wikimedia.org/r/1129221

Change #1129209 merged by jenkins-bot:

[mediawiki/extensions/EventBus@master] JobExecutor: Activate wrapping span

https://gerrit.wikimedia.org/r/1129209

ReleaseTaggerBot added a project: MW-1.44-notes (1.44.0-wmf.22; 2025-03-25).Mar 19 2025, 12:00 PM

Change #1129221 merged by jenkins-bot:

[mediawiki/extensions/EventBus@wmf/1.44.0-wmf.21] JobExecutor: Activate wrapping span

https://gerrit.wikimedia.org/r/1129221

Mentioned in SAL (#wikimedia-operations) [2025-03-19T12:32:38Z] <jnuche@deploy2002> Started scap sync-world: Backport for [[gerrit:1129221|JobExecutor: Activate wrapping span (T389331)]]

Mentioned in SAL (#wikimedia-operations) [2025-03-19T12:39:24Z] <jnuche@deploy2002> kharlan, jnuche: Backport for [[gerrit:1129221|JobExecutor: Activate wrapping span (T389331)]] synced to the testservers (https://wikitech.wikimedia.org/wiki/Mwdebug)

Mentioned in SAL (#wikimedia-operations) [2025-03-19T12:47:45Z] <jnuche@deploy2002> Finished scap sync-world: Backport for [[gerrit:1129221|JobExecutor: Activate wrapping span (T389331)]] (duration: 15m 06s)