Intermittent dom/media/test/test_mediarecorder_record_timeslice.html | Mime type in ondataavailable = - got "", expected "audio/ogg"
Categories
(Core :: Audio/Video: Recording, defect, P2)
Tracking
()
Tracking | Status | |
---|---|---|
firefox-esr60 | --- | unaffected |
firefox-esr68 | --- | wontfix |
firefox68 | --- | wontfix |
firefox69 | --- | wontfix |
firefox70 | --- | fixed |
People
(Reporter: intermittent-bug-filer, Assigned: pehrsons)
References
(Blocks 1 open bug)
Details
(Keywords: intermittent-failure, Whiteboard: [stockwell unknown])
Attachments
(1 file)
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Updated•7 years ago
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Comment 15•7 years ago
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Updated•7 years ago
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Comment 36•6 years ago
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Comment 37•6 years ago
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Comment 39•6 years ago
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Comment 50•6 years ago
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In the last 7 days, there have been 29 failures.
The failures occur on linux32, linux64 and linux64-qr platforms, debug build type.
An example of a recent log file:
https://treeherder.mozilla.org/logviewer.html#/jobs?job_id=247167377&repo=autoland&lineNumber=6835
And the relevant part of the log:
task 2019-05-18T07:59:48.707Z] 07:59:48 INFO - TEST-PASS | dom/media/test/test_mediarecorder_record_timeslice.html | Blob data received should have type = audio/ogg
[task 2019-05-18T07:59:48.708Z] 07:59:48 INFO - Buffered messages finished
[task 2019-05-18T07:59:48.711Z] 07:59:48 INFO - TEST-UNEXPECTED-FAIL | dom/media/test/test_mediarecorder_record_timeslice.html | Mime type in ondataavailable = - got "", expected "audio/ogg"
[task 2019-05-18T07:59:48.712Z] 07:59:48 INFO - SimpleTest.is@SimpleTest/SimpleTest.js:320:16
[task 2019-05-18T07:59:48.712Z] 07:59:48 INFO - startTest/element.onloadedmetadata/mediaRecorder.ondataavailable@dom/media/test/test_mediarecorder_record_timeslice.html:65:7
[task 2019-05-18T07:59:48.714Z] 07:59:48 INFO - EventHandlerNonNullstartTest/element.onloadedmetadata@dom/media/test/test_mediarecorder_record_timeslice.html:52:5
[task 2019-05-18T07:59:48.714Z] 07:59:48 INFO - EventHandlerNonNullstartTest@dom/media/test/test_mediarecorder_record_timeslice.html:30:3
[task 2019-05-18T07:59:48.715Z] 07:59:48 INFO - MediaTestManager/this.nextTest@dom/media/test/manifest.js:1834:12
[task 2019-05-18T07:59:48.716Z] 07:59:48 INFO - MediaTestManager/this.runTests/<@dom/media/test/manifest.js:1754:12
[task 2019-05-18T07:59:48.717Z] 07:59:48 INFO - GECKO(1806) | --DOMWINDOW == 12 (0x7fe1cea76800) [pid = 1889] [serial = 525] [outer = (nil)] [url = http://mochi.test:8888/tests/SimpleTest/iframe-between-tests.html]
[task 2019-05-18T07:59:48.717Z] 07:59:48 INFO - GECKO(1806) | --DOMWINDOW == 11 (0x7fe1cea72000) [pid = 1889] [serial = 524] [outer = (nil)] [url = about:blank]
[task 2019-05-18T07:59:48.718Z] 07:59:48 INFO - GECKO(1806) | --DOMWINDOW == 10 (0x7fe1d1a472e0) [pid = 1889] [serial = 523] [outer = (nil)] [url = about:blank]
[task 2019-05-18T07:59:48.747Z] 07:59:48 INFO - GECKO(1806) | --DOMWINDOW == 9 (0x7fe1cea7c400) [pid = 1889] [serial = 527] [outer = (nil)] [url = http://mochi.test:8888/tests/SimpleTest/iframe-between-tests.html]
[task 2019-05-18T07:59:48.748Z] 07:59:48 INFO - GECKO(1806) | --DOMWINDOW == 8 (0x7fe1cea77000) [pid = 1889] [serial = 526] [outer = (nil)] [url = http://mochi.test:8888/tests/dom/media/test/test_mediarecorder_record_startstopstart.html]
[task 2019-05-18T07:59:48.749Z] 07:59:48 INFO - GECKO(1806) | --DOMWINDOW == 7 (0x7fe1cea74800) [pid = 1889] [serial = 522] [outer = (nil)] [url = http://mochi.test:8888/tests/dom/media/test/test_mediarecorder_record_session.html]
[task 2019-05-18T07:59:48.766Z] 07:59:48 INFO - Finished at Sat May 18 2019 07:59:48 GMT+0000 (Coordinated Universal Time) (1558166388.762s)
[task 2019-05-18T07:59:48.768Z] 07:59:48 INFO - Running time: 0.915s
[task 2019-05-18T07:59:48.785Z] 07:59:48 INFO - GECKO(1806) | MEMORY STAT | vsize 2696MB | residentFast 167MB | heapAllocated 16MB
Nils, as you are the triage owner of this component, could you please take a look at this?
Thank you!
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Updated•5 years ago
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Comment 64•5 years ago
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This is an occurrence of a "dataavailable" event after the "stop" event (illegal by spec). The trigger of this seems to be the really short timeslice this test is using (1ms).
With bug 1514158 the rate of this went up significantly, so I'd like to fix it at the root source to allow bug 1514158 to land.
I have a run there with some logging enabled, and it appears we hit a race like so (not entirely sure about the GatherBlob order):
Contestant 1 | Contestant 2 |
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Stop() (main) | _ |
Listeners removed (graph) | _ |
Listener removal processed (encoder) | _ |
NotifyEndOfStream (encoder) (causing the DataAvailable event synchronously) | _ |
_ | MediaEncoderDataAvailable (encoder) |
_ | Extract(false) (encoder) |
_ | GetEncodedData() (encoder) (causing the Shutdown event asynchronously) |
_ | (still in Extract) Dispatch(StoreEncodedBufferRunnable()) (encoder) |
_ | (still in Extract) InvokeAsync(GatherBlob) (encoder) |
MediaEncoderShutdown() (encoder) | _ |
Dispatch(DoSessionEndTask(NS_OK)) (encoder) | _ |
_ | GatherBlob() (main) |
DoSessionEndTask(NS_OK) (main) | _ |
GatherBlob() (main) | _ |
GatherBlob()->Then Dispatch (main) | _ |
_ | GatherBlob->Then Dispatch (main) |
Dispatch("dataavailable") (main) | _ |
Dispatch("stop") (main) | _ |
_ | Dispatch("dataavailable") (main) unexpected! |
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Comment 65•5 years ago
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I have a patch that serializes the underlying storage operations under GatherBlob
, since that's where we're racing. Seems to work on try.
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Comment 66•5 years ago
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Depends on D41590
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Comment 68•5 years ago
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Comment 69•5 years ago
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bugherder |
Updated•5 years ago
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Updated•5 years ago
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Comment 72•5 years ago
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Is this something we can safely backport to ESR68? Looks like we're still occasionally seeing these oranges there.
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Comment 73•5 years ago
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No, because it depends on changes in the rather huge bug 1014393. In particular https://hg.mozilla.org/integration/autoland/rev/ba8ce9f1e1b7.
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Description
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