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Maniphest T393624

QUnit error: "Disconnected during run, waiting 2000ms for reconnecting." in ve.ce.Document
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Seen in https://integration.wikimedia.org/ci/job/quibble-vendor-mysql-php82-noselenium/32305/console (kept forever) for parsoid patch r1141191:

18:25:08   ve.ce.Document
18:25:08     ✔ Converter tests
18:25:12 07 05 2025 16:25:12.550:DEBUG [Firefox 128.0 (Linux x86_64)]: Disconnected during run, waiting 2000ms for reconnecting.
18:25:12 07 05 2025 16:25:12.551:DEBUG [Firefox 128.0 (Linux x86_64)]: EXECUTING -> EXECUTING_DISCONNECTED
18:25:13 07 05 2025 16:25:13.841:DEBUG [middleware:source-files]: Requesting /null
18:25:13 07 05 2025 16:25:13.841:DEBUG [middleware:source-files]: Fetching /null
18:25:13 07 05 2025 16:25:13.842:DEBUG [proxy]: proxying request - /null to 127.0.0.1:9413
18:25:14 07 05 2025 16:25:14.499:DEBUG [karma-server]: A browser has connected on socket 40x9O0AchJbo_BxxAAAD
18:25:14 07 05 2025 16:25:14.511:DEBUG [web-server]: upgrade /socket.io/?EIO=4&transport=websocket&sid=oxY1AMzFD1B70M0kAAAC
18:25:14 07 05 2025 16:25:14.511:DEBUG [proxy]: NOT upgrading proxyWebSocketRequest /socket.io/?EIO=4&transport=websocket&sid=oxY1AMzFD1B70M0kAAAC
18:25:14 07 05 2025 16:25:14.552:WARN [Firefox 128.0 (Linux x86_64)]: Disconnected (0 times) reconnect failed before timeout of 2000ms (ping timeout)
18:25:14 Firefox 128.0 (Linux x86_64) ERROR
18:25:14   Disconnected reconnect failed before timeout of 2000ms (ping timeout)
18:25:14 07 05 2025 16:25:14.552:DEBUG [Firefox 128.0 (Linux x86_64)]: EXECUTING_DISCONNECTED -> DISCONNECTED
18:25:14 07 05 2025 16:25:14.554:DEBUG [launcher]: CAPTURED -> BEING_KILLED
18:25:14 07 05 2025 16:25:14.558:DEBUG [launcher]: BEING_KILLED -> BEING_FORCE_KILLED
18:25:14 07 05 2025 16:25:14.558:DEBUG [Firefox 128.0 (Linux x86_64)]: DISCONNECTED -> DISCONNECTED
18:25:14 
18:25:14 Finished in 23.186 secs / 16.741 secs @ 16:25:14 GMT+0000 (Coordinated Universal Time)

Seen similar errors in other builds and different tests, including reports in the parent task.

My guess is that this has nothing to do with VE (or any other specific component), and that CI executors sometimes have spikes of resource unavailability; because JavaScript-ish tests (QUnit, selenium, api-testing) run under strict timeouts, these spikes can result in test failure. If so, this would be similar to T380061 and T389863.

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Event Timeline

Daimona created this task.May 7 2025, 5:01 PM
Restricted Application added a subscriber: Aklapper. · View Herald TranscriptMay 7 2025, 5:01 PM
Daimona added a parent task: T388416: CI jobs failing with various timeouts (March 2025).May 7 2025, 5:02 PM
Michael subscribed.May 21 2025, 7:03 AM

I feel like I'm seeing various QUnit errors more often lately. This time on a GrowthExperiments change when it disconnected in the mediawiki.deflate tests:

00:05:25.908   mediawiki.deflate
00:05:25.908     ✔ deflate [foobar]
00:05:25.913     ✔ deflate [Unicode]
00:05:25.922     ✔ deflate [Non BMP unicode]
00:05:31.317 20 05 2025 14:38:07.586:DEBUG [Firefox 115.0 (Linux x86_64)]: Disconnected during run, waiting 2000ms for reconnecting.
00:05:31.318 20 05 2025 14:38:07.586:DEBUG [Firefox 115.0 (Linux x86_64)]: EXECUTING -> EXECUTING_DISCONNECTED
00:05:33.320 20 05 2025 14:38:09.589:WARN [Firefox 115.0 (Linux x86_64)]: Disconnected (0 times) reconnect failed before timeout of 2000ms (ping timeout)
00:05:33.320 Firefox 115.0 (Linux x86_64) ERROR
00:05:33.320   Disconnected reconnect failed before timeout of 2000ms (ping timeout)
00:05:33.321 20 05 2025 14:38:09.590:DEBUG [Firefox 115.0 (Linux x86_64)]: EXECUTING_DISCONNECTED -> DISCONNECTED
00:05:33.321 20 05 2025 14:38:09.591:DEBUG [launcher]: CAPTURED -> BEING_KILLED
00:05:33.322 20 05 2025 14:38:09.591:DEBUG [launcher]: BEING_KILLED -> BEING_FORCE_KILLED
00:05:33.322 20 05 2025 14:38:09.591:DEBUG [Firefox 115.0 (Linux x86_64)]: DISCONNECTED -> DISCONNECTED
00:05:33.322 
00:05:33.322 Finished in 18.322 secs / 10.485 secs @ 14:38:09 GMT+0000 (Coordinated Universal Time)

(source kept forever: https://integration.wikimedia.org/ci/job/quibble-vendor-mysql-php74/4087/console)

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