HttpMetricsTest_Http20.TimeInQueue_RecordedForNewConnectionsOnly test failure

[jkotas]

    System.Net.Http.Functional.Tests.HttpMetricsTest_Http20.TimeInQueue_RecordedForNewConnectionsOnly [FAIL]
      Assert.Equal() Failure: Values differ
      Expected: 1
      Actual:   2
      Stack Trace:
        /_/src/libraries/System.Net.Http/tests/FunctionalTests/MetricsTest.cs(907,0): at System.Net.Http.Functional.Tests.HttpMetricsTest.<TimeInQueue_RecordedForNewConnectionsOnly>b__26_0(Uri uri)
        /_/src/libraries/Common/tests/System/Threading/Tasks/TaskTimeoutExtensions.cs(120,0): at System.Threading.Tasks.TaskTimeoutExtensions.GetRealException(Task task)

Build Information

Build: https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_build/results?buildId=1230390
Build error leg or test failing: System.Threading.Threads.Tests.ThreadTests.IsBackgroundTest
Pull request: #122513

Error Message

Fill the error message using step by step known issues guidance.

{
  "ErrorPattern": "HttpMetricsTest.*TimeInQueue_RecordedForNewConnectionsOnly \\[FAIL\\]",
  "BuildRetry": false,
  "ExcludeConsoleLog": false
}

Known issue validation

Build: 🔎 https://dev.azure.com/dnceng-public/public/_build/results?buildId=1230390
Error message validated: [HttpMetricsTest_Http20.TimeInQueue_RecordedForNewConnectionsOnly [FAIL] Values differ]
Result validation: ✅ Known issue matched with the provided build.
Validation performed at: 12/13/2025 9:46:21 AM UTC

Report

Build	Repository	Test	Pull Request
1542695	dotnet/runtime	System.Net.Http.Functional.Tests.SocketsHttpHandlerTest_Cookies_Http3.GetAsyncWithRedirect_ReceiveSetCookie_CookieSent	#131732
1540994	dotnet/runtime	System.Net.Http.Functional.Tests.HttpMetricsTest_Http20.TimeInQueue_RecordedForNewConnectionsOnly	#131872
1540399	dotnet/runtime	System.Net.Http.Functional.Tests.HttpMetricsTest_Http20.TimeInQueue_RecordedForNewConnectionsOnly	#131846

Summary

24-Hour Hit Count	7-Day Hit Count	1-Month Count
1	3	3

Known issue validation

Build: 🔎
Result validation: ⚠️ Validation could not be done without an Azure DevOps build URL on the issue. Please add it to the "Build: 🔎" line.
Validation performed at: 9/3/2026 5:13:11 PM UTC

Report

Build	Repository	Test	Pull Request
1542695	dotnet/runtime	System.Net.Http.Functional.Tests.SocketsHttpHandlerTest_Cookies_Http3.GetAsyncWithRedirect_ReceiveSetCookie_CookieSent	#131732
1540994	dotnet/runtime	System.Net.Http.Functional.Tests.HttpMetricsTest_Http20.TimeInQueue_RecordedForNewConnectionsOnly	#131872
1540399	dotnet/runtime	System.Net.Http.Functional.Tests.HttpMetricsTest_Http20.TimeInQueue_RecordedForNewConnectionsOnly	#131846

Summary

24-Hour Hit Count	7-Day Hit Count	1-Month Count
1	3	3

Report

Build	Repository	Test	Pull Request
1628378	dotnet/runtime	System.Net.Http.Functional.Tests.SocketsHttpHandlerTest_Http2.ServerDisconnectDuringSetup_PropagatesMeaningfulException	#135434
1627279	dotnet/runtime	System.Net.Http.Functional.Tests.HttpMetricsTest_Http30_HttpMessageInvoker.TimeInQueue_RecordedForNewConnectionsOnly	#135323
1626981	dotnet/runtime	System.Net.Http.Functional.Tests.HttpMetricsTest_Http30.TimeInQueue_RecordedForNewConnectionsOnly
1626941	dotnet/runtime	System.Net.Http.Functional.Tests.HttpMetricsTest_Http20_HttpMessageInvoker.TimeInQueue_RecordedForNewConnectionsOnly	#135302
1626743	dotnet/runtime	System.Net.Http.Functional.Tests.HttpMetricsTest_Http20_HttpMessageInvoker.TimeInQueue_RecordedForNewConnectionsOnly	#135355
1626189	dotnet/runtime	System.Net.Http.Functional.Tests.HttpMetricsTest_Http30.TimeInQueue_RecordedForNewConnectionsOnly
1625807	dotnet/runtime	System.Net.Http.Functional.Tests.HttpMetricsTest_Http20.TimeInQueue_RecordedForNewConnectionsOnly	#135323
1625742	dotnet/runtime	System.Net.Http.Functional.Tests.HttpMetricsTest_Http30.TimeInQueue_RecordedForNewConnectionsOnly
1625225	dotnet/runtime	System.Net.Http.Functional.Tests.HttpMetricsTest_Http20.TimeInQueue_RecordedForNewConnectionsOnly	#135295
1625015	dotnet/runtime	System.Net.Http.Functional.Tests.HttpMetricsTest_Http20.TimeInQueue_RecordedForNewConnectionsOnly	#135277
1624774	dotnet/runtime	System.Net.Http.Functional.Tests.HttpMetricsTest_Http20_HttpMessageInvoker.TimeInQueue_RecordedForNewConnectionsOnly	#135226
1624492	dotnet/runtime	System.Net.Http.Functional.Tests.HttpMetricsTest_Http20_HttpMessageInvoker.TimeInQueue_RecordedForNewConnectionsOnly
1624154	dotnet/runtime	System.Net.Http.Functional.Tests.HttpMetricsTest_Http20.TimeInQueue_RecordedForNewConnectionsOnly	#135239
1624128	dotnet/runtime	System.Net.Http.Functional.Tests.HttpMetricsTest_Http20.TimeInQueue_RecordedForNewConnectionsOnly	#132591
1624112	dotnet/runtime	System.Net.Http.Functional.Tests.HttpMetricsTest_Http20_HttpMessageInvoker.TimeInQueue_RecordedForNewConnectionsOnly	#135248
1624096	dotnet/runtime	System.Net.Http.Functional.Tests.HttpMetricsTest_Http30.TimeInQueue_RecordedForNewConnectionsOnly	#135067
1623618	dotnet/runtime	System.Net.Http.Functional.Tests.HttpMetricsTest_Http20_HttpMessageInvoker.TimeInQueue_RecordedForNewConnectionsOnly	#134958
1622443	dotnet/runtime	System.Net.Http.Functional.Tests.SocketsHttpHandlerTest_Http2.ServerDisconnectDuringSetup_PropagatesMeaningfulException
1622081	dotnet/runtime	System.Net.Http.Functional.Tests.HttpMetricsTest_Http20.TimeInQueue_RecordedForNewConnectionsOnly
1621721	dotnet/runtime	System.Net.Http.Functional.Tests.HttpMetricsTest_Http20.TimeInQueue_RecordedForNewConnectionsOnly	#134792
1621227	dotnet/runtime	System.Net.Http.Functional.Tests.HttpMetricsTest_Http30.TimeInQueue_RecordedForNewConnectionsOnly
1620777	dotnet/runtime	System.Net.Http.Functional.Tests.HttpMetricsTest_Http20.TimeInQueue_RecordedForNewConnectionsOnly	#135081
1620769	dotnet/runtime	System.Net.Http.Functional.Tests.HttpMetricsTest_Http20.TimeInQueue_RecordedForNewConnectionsOnly	#133662
1620545	dotnet/runtime	System.Net.Http.Functional.Tests.SocketsHttpHandlerTest_Cookies_Http3.GetAsyncWithRedirect_SetCookieContainer_CorrectCookiesSent
1620394	dotnet/runtime	System.Net.Http.Functional.Tests.HttpMetricsTest_Http20.TimeInQueue_RecordedForNewConnectionsOnly	#134966
1620355	dotnet/runtime	System.Net.Http.Functional.Tests.HttpMetricsTest_Http20_HttpMessageInvoker.TimeInQueue_RecordedForNewConnectionsOnly	#133658
1620322	dotnet/runtime	System.Net.Http.Functional.Tests.HttpMetricsTest_Http30.TimeInQueue_RecordedForNewConnectionsOnly	#134978
1620153	dotnet/runtime	System.Net.Http.Functional.Tests.HttpMetricsTest_Http20_HttpMessageInvoker.TimeInQueue_RecordedForNewConnectionsOnly	#135049
1619940	dotnet/runtime	System.Net.Http.Functional.Tests.HttpMetricsTest_Http20.TimeInQueue_RecordedForNewConnectionsOnly	#135033
1619875	dotnet/runtime	System.Net.Http.Functional.Tests.HttpMetricsTest_Http20.TimeInQueue_RecordedForNewConnectionsOnly	#132861
1619679	dotnet/runtime	System.Net.Http.Functional.Tests.HttpMetricsTest_Http20.TimeInQueue_RecordedForNewConnectionsOnly	#135024
1619393	dotnet/runtime	System.Net.Http.Functional.Tests.HttpMetricsTest_Http20_HttpMessageInvoker.TimeInQueue_RecordedForNewConnectionsOnly	#134920
1619096	dotnet/runtime	System.Net.Http.Functional.Tests.HttpMetricsTest_Http30.TimeInQueue_RecordedForNewConnectionsOnly
1618883	dotnet/runtime	System.Net.Http.Functional.Tests.HttpMetricsTest_Http20.TimeInQueue_RecordedForNewConnectionsOnly	#134992
1618762	dotnet/runtime	System.Net.Http.Functional.Tests.HttpMetricsTest_Http20.TimeInQueue_RecordedForNewConnectionsOnly
1618023	dotnet/runtime	System.Net.Http.Functional.Tests.HttpMetricsTest_Http20_HttpMessageInvoker.TimeInQueue_RecordedForNewConnectionsOnly	#134356
1617696	dotnet/runtime	System.Net.Http.Functional.Tests.HttpMetricsTest_Http20.TimeInQueue_RecordedForNewConnectionsOnly	#134921
1617322	dotnet/runtime	System.Net.Http.Functional.Tests.HttpMetricsTest_Http20.TimeInQueue_RecordedForNewConnectionsOnly	#134771
1617102	dotnet/runtime	System.Net.Http.Functional.Tests.HttpMetricsTest_Http20.TimeInQueue_RecordedForNewConnectionsOnly	#133662
1616588	dotnet/runtime	System.Net.Http.Functional.Tests.HttpMetricsTest_Http20_HttpMessageInvoker.TimeInQueue_RecordedForNewConnectionsOnly	#134857
1616549	dotnet/runtime	System.Net.Http.Functional.Tests.HttpMetricsTest_Http20_HttpMessageInvoker.TimeInQueue_RecordedForNewConnectionsOnly	#130407
1616352	dotnet/runtime	System.Net.Http.Functional.Tests.HttpClientHandlerTest_Http3.SendAsync_RequestRejected_ClientRetries	#134813
1616210	dotnet/runtime	System.Net.Http.Functional.Tests.HttpMetricsTest_Http20_HttpMessageInvoker.TimeInQueue_RecordedForNewConnectionsOnly	#133174
1615904	dotnet/runtime	System.Net.Http.Functional.Tests.HttpMetricsTest_Http20.TimeInQueue_RecordedForNewConnectionsOnly	#134745
1615625	dotnet/runtime	System.Net.Http.Functional.Tests.HttpMetricsTest_Http20.TimeInQueue_RecordedForNewConnectionsOnly	#134813
1614394	dotnet/runtime	System.Net.Http.Functional.Tests.HttpMetricsTest_Http30.TimeInQueue_RecordedForNewConnectionsOnly
1614144	dotnet/runtime	System.Net.Http.Functional.Tests.HttpMetricsTest_Http20.TimeInQueue_RecordedForNewConnectionsOnly	#134759
1614059	dotnet/runtime	System.Net.Http.Functional.Tests.HttpMetricsTest_Http30.TimeInQueue_RecordedForNewConnectionsOnly	#130050
1613600	dotnet/runtime	System.Net.Http.Functional.Tests.HttpMetricsTest_Http20_HttpMessageInvoker.TimeInQueue_RecordedForNewConnectionsOnly	#134726
1613564	dotnet/runtime	System.Net.Http.Functional.Tests.HttpMetricsTest_Http20.TimeInQueue_RecordedForNewConnectionsOnly	#134727
1613470	dotnet/runtime	System.Net.Http.Functional.Tests.SocketsHttpHandler_DiagnosticsTest_Http3.SendAsync_ReuseRequestInHandler_ResetsHeadersForEachReuse	#134699
1613455	dotnet/runtime	System.Net.Http.Functional.Tests.HttpMetricsTest_Http20.TimeInQueue_RecordedForNewConnectionsOnly	#134719
1613424	dotnet/runtime	System.Net.Http.Functional.Tests.HttpMetricsTest_Http20.TimeInQueue_RecordedForNewConnectionsOnly	#134676
1613217	dotnet/runtime	System.Net.Http.Functional.Tests.HttpMetricsTest_Http20.TimeInQueue_RecordedForNewConnectionsOnly	#134699
1613174	dotnet/runtime	System.Net.Http.Functional.Tests.HttpClientHandlerTest_Http3.SendAsync_RequestRejected_ClientRetries
1612157	dotnet/runtime	System.Net.Http.Functional.Tests.HttpMetricsTest_Http20.TimeInQueue_RecordedForNewConnectionsOnly	#134648
1611062	dotnet/runtime	System.Net.Http.Functional.Tests.HttpMetricsTest_Http30.TimeInQueue_RecordedForNewConnectionsOnly	#134260
1610977	dotnet/runtime	System.Net.Http.Functional.Tests.SocketsHttpHandler_DiagnosticsTest_Http3.SendAsync_ReuseRequestInHandler_ResetsHeadersForEachReuse	#134570
1609955	dotnet/runtime	System.Net.Http.Functional.Tests.HttpMetricsTest_Http20.TimeInQueue_RecordedForNewConnectionsOnly
1609073	dotnet/runtime	System.Net.Http.Functional.Tests.HttpMetricsTest_Http20.TimeInQueue_RecordedForNewConnectionsOnly	#134413
1608446	dotnet/runtime	System.Net.Http.Functional.Tests.HttpMetricsTest_Http20_HttpMessageInvoker.TimeInQueue_RecordedForNewConnectionsOnly	#134499
1608288	dotnet/runtime	System.Net.Http.Functional.Tests.HttpMetricsTest_Http20.TimeInQueue_RecordedForNewConnectionsOnly
1607603	dotnet/runtime	System.Net.Http.Functional.Tests.HttpMetricsTest_Http30.TimeInQueue_RecordedForNewConnectionsOnly	#134443
1606136	dotnet/runtime	System.Net.Http.Functional.Tests.HttpMetricsTest_Http30_HttpMessageInvoker.TimeInQueue_RecordedForNewConnectionsOnly	#134354
1607299	dotnet/runtime	System.Net.Http.Functional.Tests.HttpMetricsTest_Http20.TimeInQueue_RecordedForNewConnectionsOnly	#134121
1607284	dotnet/runtime	System.Net.Http.Functional.Tests.HttpMetricsTest_Http20.TimeInQueue_RecordedForNewConnectionsOnly	#134419
1607110	dotnet/runtime	System.Net.Http.Functional.Tests.HttpMetricsTest_Http20_HttpMessageInvoker.TimeInQueue_RecordedForNewConnectionsOnly	#134408
1606800	dotnet/runtime	System.Net.Http.Functional.Tests.HttpMetricsTest_Http20.TimeInQueue_RecordedForNewConnectionsOnly	#134105
1606549	dotnet/runtime	System.Net.Http.Functional.Tests.HttpMetricsTest_Http20_HttpMessageInvoker.TimeInQueue_RecordedForNewConnectionsOnly	#133384
1606407	dotnet/runtime	System.Net.Http.Functional.Tests.HttpMetricsTest_Http20.TimeInQueue_RecordedForNewConnectionsOnly	#134167
1606063	dotnet/runtime	System.Net.Http.Functional.Tests.HttpMetricsTest_Http20.TimeInQueue_RecordedForNewConnectionsOnly	#134371
1606027	dotnet/runtime	System.Net.Http.Functional.Tests.HttpMetricsTest_Http20_HttpMessageInvoker.TimeInQueue_RecordedForNewConnectionsOnly	#134370
1605236	dotnet/runtime	System.Net.Http.Functional.Tests.HttpMetricsTest_Http30.TimeInQueue_RecordedForNewConnectionsOnly
1605122	dotnet/runtime	System.Net.Http.Functional.Tests.SocketsHttpHandler_DiagnosticsTest_Http3.SendAsync_ReuseRequestInHandler_ResetsHeadersForEachReuse	#134333
1605113	dotnet/runtime	System.Net.Http.Functional.Tests.HttpMetricsTest_Http30.TimeInQueue_RecordedForNewConnectionsOnly	#134332
1604971	dotnet/runtime	System.Net.Http.Functional.Tests.HttpMetricsTest_Http20.TimeInQueue_RecordedForNewConnectionsOnly	#134327
1604910	dotnet/runtime	System.Net.Http.Functional.Tests.HttpMetricsTest_Http20.TimeInQueue_RecordedForNewConnectionsOnly
1604777	dotnet/runtime	System.Net.Http.Functional.Tests.HttpMetricsTest_Http20.TimeInQueue_RecordedForNewConnectionsOnly	#134324
1604064	dotnet/runtime	System.Net.Http.Functional.Tests.HttpMetricsTest_Http20.TimeInQueue_RecordedForNewConnectionsOnly	#133265
1603517	dotnet/runtime	System.Net.Http.Functional.Tests.HttpMetricsTest_Http20.TimeInQueue_RecordedForNewConnectionsOnly
1603483	dotnet/runtime	System.Net.Http.Functional.Tests.HttpMetricsTest_Http20_HttpMessageInvoker.TimeInQueue_RecordedForNewConnectionsOnly
1603402	dotnet/runtime	System.Net.Http.Functional.Tests.HttpMetricsTest_Http20.TimeInQueue_RecordedForNewConnectionsOnly
1603252	dotnet/runtime	System.Net.Http.Functional.Tests.HttpMetricsTest_Http30.TimeInQueue_RecordedForNewConnectionsOnly	#133804
1602955	dotnet/runtime	System.Net.Http.Functional.Tests.HttpMetricsTest_Http30_HttpMessageInvoker.TimeInQueue_RecordedForNewConnectionsOnly	#133659
1602973	dotnet/runtime	System.Net.Http.Functional.Tests.HttpMetricsTest_Http20.TimeInQueue_RecordedForNewConnectionsOnly	#133804
1602914	dotnet/runtime	System.Net.Http.Functional.Tests.HttpMetricsTest_Http20_HttpMessageInvoker.TimeInQueue_RecordedForNewConnectionsOnly	#134060
1602838	dotnet/runtime	System.Net.Http.Functional.Tests.HttpMetricsTest_Http20.TimeInQueue_RecordedForNewConnectionsOnly	#134212
1602810	dotnet/runtime	System.Net.Http.Functional.Tests.HttpMetricsTest_Http30_HttpMessageInvoker.TimeInQueue_RecordedForNewConnectionsOnly
1602512	dotnet/runtime	System.Net.Http.Functional.Tests.SocketsHttpHandlerTest_Cookies_Http3.GetAsync_Redirect_CookiesArePreserved	#134199
1602236	dotnet/runtime	System.Net.Http.Functional.Tests.HttpMetricsTest_Http20.TimeInQueue_RecordedForNewConnectionsOnly	#134181
1602203	dotnet/runtime	System.Net.Http.Functional.Tests.HttpMetricsTest_Http30.TimeInQueue_RecordedForNewConnectionsOnly	#134141
1601762	dotnet/runtime	System.Net.Http.Functional.Tests.HttpMetricsTest_Http30.TimeInQueue_RecordedForNewConnectionsOnly	#134167
1601545	dotnet/runtime	System.Net.Http.Functional.Tests.HttpMetricsTest_Http20_HttpMessageInvoker.TimeInQueue_RecordedForNewConnectionsOnly	#133656
1601165	dotnet/runtime	System.Net.Http.Functional.Tests.HttpMetricsTest_Http20.TimeInQueue_RecordedForNewConnectionsOnly	#134135
1600957	dotnet/runtime	System.Net.Http.Functional.Tests.HttpMetricsTest_Http20_HttpMessageInvoker.TimeInQueue_RecordedForNewConnectionsOnly	#133934
1600943	dotnet/runtime	System.Net.Http.Functional.Tests.HttpMetricsTest_Http20.TimeInQueue_RecordedForNewConnectionsOnly	#131597
1600746	dotnet/runtime	System.Net.Http.Functional.Tests.HttpMetricsTest_Http20.TimeInQueue_RecordedForNewConnectionsOnly
1599510	dotnet/runtime	System.Net.Http.Functional.Tests.HttpMetricsTest_Http20_HttpMessageInvoker.TimeInQueue_RecordedForNewConnectionsOnly	#133378
1599506	dotnet/runtime	System.Net.Http.Functional.Tests.HttpMetricsTest_Http20_HttpMessageInvoker.TimeInQueue_RecordedForNewConnectionsOnly	#133058
1597936	dotnet/runtime	System.Net.Http.Functional.Tests.HttpMetricsTest_Http20.TimeInQueue_RecordedForNewConnectionsOnly	#133773
Displaying 100 of 140 results

Summary

24-Hour Hit Count	7-Day Hit Count	1-Month Count
3	28	140

[dotnet-policy-service]

Tagging subscribers to this area: @dotnet/ncl
See info in area-owners.md if you want to be subscribed.

[SakeTao]

Failed in: runtime-coreclr libraries-jitstress 20251214.1

Failed tests:

net11.0-linux-Release-x64-jitstress2-AzureLinux.3.Amd64.Open
    - System.Threading.Threads.Tests.ThreadTests.IsBackgroundTest

Error message:

Assert.Throws() Failure: No exception was thrown
Expected: typeof(System.Threading.ThreadStateException)

Stack trace:

   at System.Threading.Threads.Tests.ThreadTests.IsBackgroundTest() in /_/src/libraries/System.Threading.Thread/tests/ThreadTests.cs:line 580
   at System.Reflection.MethodBaseInvoker.InterpretedInvoke_Method(Object obj, IntPtr* args) in /_/src/coreclr/System.Private.CoreLib/src/System/Reflection/MethodBaseInvoker.CoreCLR.cs:line 36
   at System.Reflection.MethodBaseInvoker.InvokeWithNoArgs(Object obj, BindingFlags invokeAttr) in /_/src/libraries/System.Private.CoreLib/src/System/Reflection/MethodBaseInvoker.cs:line 57

[ManickaP]

There's tons of re-runs of this as well. We should look into it and fix it. This is likely a test-bug.

[michaellinhq]

Hi, I reviewed 'HttpMetricsTest_Http20.TimeInQueue_RecordedForNewConnectionsOnly test failure' and can start immediately. I can deliver a first usable version quickly and iterate based on your feedback. If this scope still matches your priority, I can proceed right away.

[kuba1]

@ManickaP Could you point me to the pipeline this is failing on? Had a bit of a hard time finding it since all the runs mentioned here are deleted.

I didn't manage to reproduce this locally, but dug into the code a little bit and it seems that the HttpConnectionPool cannot find an appropriate connection for second (or third?) request, even though the connection should already be established.

There is additional logging that can be enabled with EventListener that shows what's happening inside the HttpConnectionPool. I created a draft PR: #124740

[jeffschwMSFT]

removing blocking-clean-ci has it has not failed in 30 days

24-Hour Hit Count	7-Day Hit Count	1-Month Count
0	0	0