237095 2022-02-23 11:21:59 -0800 [ Mac EWS ] imported/w3c/web-platform-tests/workers/semantics/multiple-workers/004.html is a flaky text failure 2022-07-08 03:03:51 -0700 1 1 1 Unclassified WebKit Service Workers WebKit Nightly Build Unspecified Unspecified RESOLVED FIXED InRadar P2 Normal --- 1 jenner youennf cdumez simon.fraser webkit-bot-watchers-bugzilla webkit-bug-importer youennf oldest_to_newest 1845232 0 jenner 2022-02-23 11:21:59 -0800 imported/w3c/web-platform-tests/workers/semantics/multiple-workers/004.html is a flaky text failure on macOS, and is affecting EWS as well. HISTORY: https://results.webkit.org/?suite=layout-tests&test=imported%2Fw3c%2Fweb-platform-tests%2Fworkers%2Fsemantics%2Fmultiple-workers%2F004.html&platform=mac LINK TO EWS FAILURE: https://ews-build.webkit.org/#/builders/60/builds/24663 TEXT DIFF: -PASS shared worker with multiple documents +Harness Error (TIMEOUT), message = null +NOTRUN shared worker with multiple documents + DIFF URL: https://build.webkit.org/results/Apple-BigSur-Release-AppleSilicon-WK2-Tests/r290366%20(6732)/imported/w3c/web-platform-tests/workers/semantics/multiple-workers/004-pretty-diff.html 1845233 1 webkit-bug-importer 2022-02-23 11:22:25 -0800 <rdar://problem/89367636> 1845236 2 jenner 2022-02-23 11:29:18 -0800 Added [ Pass Failure ] expectation here to speed up EWS: https://trac.webkit.org/changeset/290386/webkit 1845263 3 jenner 2022-02-23 12:18:37 -0800 I did attempt to reproduce this failure at Monterey Production ToT. However, I was unsuccessful. I even took it all the way up to 1000 iterations. 1845648 4 cdumez 2022-02-24 09:49:03 -0800 I added some logging in <https://commits.webkit.org/r290439> to help investigate via the bots since I wasn't able to reproduce locally yet. 1876769 5 youennf 2022-06-20 05:03:59 -0700 Added logging shows the following: CONSOLE MESSAGE: Error: assert_equals: Worker Message Count expected 3 but got 0 Iframes are being loaded but one of the following hypothesis is probably true: - shared worker might not being executed - shared worker might not be receiving the connect event - MessagePort postMessage sometimes does not work 1877272 6 youennf 2022-06-22 04:59:08 -0700 One possibility is that we delay the connect event until we have a process to run the shared worker. We then fire the connect event for all SharedWorker but we do not respect the order so the first port is related to the iframe SharedWorker instead of the main frame SharedWorker. 1877311 7 youennf 2022-06-22 09:32:35 -0700 Pull request: https://github.com/WebKit/WebKit/pull/1684 1877635 8 ews-feeder 2022-06-23 05:44:08 -0700 Committed r295776 (251781@main): <https://commits.webkit.org/251781@main> Reviewed commits have been landed. Closing PR #1684 and removing active labels. 1878053 9 simon.fraser 2022-06-23 17:50:21 -0700 This test is crashing in EWS: https://results.webkit.org/?suite=layout-tests&test=imported%2Fw3c%2Fweb-platform-tests%2Fworkers%2Fshared-worker-parse-error-failure.html https://ews-build.s3-us-west-2.amazonaws.com/macOS-AppleSilicon-Big-Sur-Debug-WK2-Tests-EWS/e9afac16-33487/results.html 1878140 10 youennf 2022-06-24 00:37:19 -0700 Added test is also flaky (fix available at https://bugs.webkit.org/show_bug.cgi?id=241957). Given I will not be able to fix it very soon, let's revert this change for now in https://bugs.webkit.org/show_bug.cgi?id=241958. 1878141 11 youennf 2022-06-24 00:39:17 -0700 Reopening to fix the debug assertion and flaky test 1878143 12 youennf 2022-06-24 00:39:51 -0700 *** Bug 241957 has been marked as a duplicate of this bug. *** 1880507 13 youennf 2022-07-04 05:57:02 -0700 Pull request: https://github.com/WebKit/WebKit/pull/2054 1881610 14 ews-feeder 2022-07-08 03:03:48 -0700 Committed 252267@main (82a9cba78565): <https://commits.webkit.org/252267@main> Reviewed commits have been landed. Closing PR #2054 and removing active labels.