Bug 229424

Summary:	[ Catalina EWS ] http/tests/media/hls/range-request.html is a flaky failure
Product:	WebKit	Reporter:	ayumi_kojima
Component:	Media	Assignee:	Nobody <webkit-unassigned>
Status:	RESOLVED FIXED
Severity:	Normal	CC:	eric.carlson, jer.noble, webkit-bot-watchers-bugzilla, webkit-bug-importer
Priority:	P2	Keywords:	InRadar
Version:	WebKit Nightly Build
Hardware:	Unspecified
OS:	Unspecified

Description ayumi_kojima 2021-08-23 14:55:27 PDT

http/tests/media/hls/range-request.html

Is a flaky failure on macOS-Catalina-Release-WK2-Tests-EWS.

It appears that the flaky failure started at this build: https://ews-build.webkit.org/#/builders/59/builds/13113

The failure is also seen on the open source directory.

History: https://results.webkit.org/?suite=layout-tests&test=http/tests/media/hls/range-request.html

Diff: 

--- /Volumes/Data/worker/catalina-debug-tests-wk2/build/layout-test-results/http/tests/media/hls/range-request-expected.txt
+++ /Volumes/Data/worker/catalina-debug-tests-wk2/build/layout-test-results/http/tests/media/hls/range-request-actual.txt
@@ -1,3 +1,6 @@
 
 EVENT(playing)
+EVENT(playing)
+EVENT(playing)
+EVENT(playing)

Comment 1 Radar WebKit Bug Importer 2021-08-23 14:56:47 PDT

<rdar://problem/82262926>

Comment 2 ayumi_kojima 2021-08-23 16:45:44 PDT

On the history, the test first started failing at r280841 on gpuprocess and started seeing more consistent failure at r281193.

I was able to reproduce the failure at TOT and r280700 using: run-webkit-tests --iterations 50 --exit-after-n-failures 1 --exit-after-n-crashes-or-timeouts 1 http/tests/media/hls/range-request.html

Will continue on my research.

Comment 3 ayumi_kojima 2021-08-23 16:52:52 PDT

In the meantime, marked expectations here https://trac.webkit.org/changeset/281478/webkit

Comment 4 ayumi_kojima 2021-09-14 15:42:21 PDT

This seems fixed. Removed the expectation and closing the bug: https://trac.webkit.org/changeset/282418/webkit