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https://issues.apache.org/jira/browse/TINKERPOP-2043?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16646623#comment-16646623
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Florian Hockmann commented on TINKERPOP-2043:
---------------------------------------------
However, the fix also went into the release branches for the versions 3.2.10
and 3.3.4 which we expect to release relatively soon. So, you can just wait for
the release of 3.3.4 and then use that version.
Anyway, thanks for reporting back on this. I guess we can now close this
ticket. You can re-open or comment here again in case you see this problem
again with 3.4.0-rc2 or the to be released version 3.3.4.
> CloseAndRemoveAllConnections bubbles up System.Net.Http.WinHttpException and
> doesn't recover
> --------------------------------------------------------------------------------------------
>
> Key: TINKERPOP-2043
> URL: https://issues.apache.org/jira/browse/TINKERPOP-2043
> Project: TinkerPop
> Issue Type: Bug
> Components: dotnet
> Affects Versions: 3.4.0
> Environment: Gremlin.Net 3.4.0-rc1
> Microsoft.NetCore.App v2.0
> Reporter: Sami
> Priority: Critical
>
> We have a .Net Core web api with an Azure Cosmos db backend.
> Our data access layer calls
> _gremlinConnection.Client.SubmitAsync<dynamic>(query) using a singleton
> gremlin connection. This has worked well except when the API is called with
> many parallel web api requests. The endpoints that we provide make around 5
> gremlin calls (some to read, some to write cosmos db edges).
> During performance testing we noticed System.Net.Http.WinHttpException
> Looking into the issue, we found that NrConnections was at 96 and the stack
> trace showed that Gremlin.Net called
> ConnectionPool.CloseAndRemoveAllConnections.
> We would expect that Gremlin.Net would recover after a call to
> CloseAndRemoveAllConnections and finish its "Client.SubmitAsync" call but
> instead it bubbles up the System.Net.Http.WinHttpException and immediately
> following calls to our API failed with the same
> System.Net.Http.WinHttpException.
>
> Would you agree that Gremlin.Net's
> ConnectionPool.CloseAndRemoveAllConnections should recover on its own and
> +complete+ its Client.SubmitAsync call or do you expect the consumer of
> Gremlin.Net to provide some work-around? If so, how can the pool be
> re-initiated or reset from outside of the Gremlin.Net library?
>
> Here is the stack trace. Please note that we are ready for a release and this
> is holding us back. By the way, we do use Gremlin.Net 3.4 RC1 but 3.3.3 also
> proved to have the same issue.
>
> {code:java}
> // code placeholder
> ProjectX.Exceptions.PersistenceFailedException:
> at ProjectX.Repository.Cosmos.UnitOfWork+<DeletePersonAsync>d__32.MoveNext
> (<...removed...>)
> at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw
> (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral,
> PublicKeyToken=7cec85d7bea7798e)
> at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess
> (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral,
> PublicKeyToken=7cec85d7bea7798e)
> at
> System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification
> (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral,
> PublicKeyToken=7cec85d7bea7798e)
> at System.Runtime.CompilerServices.TaskAwaiter.GetResult
> (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral,
> PublicKeyToken=7cec85d7bea7798e)
> at
> ProjectX.ModelAPI.Controllers.PersonsController+<RemovePerson>d__7.MoveNext
> (<...removed...>)
> at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw
> (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral,
> PublicKeyToken=7cec85d7bea7798e)
> at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess
> (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral,
> PublicKeyToken=7cec85d7bea7798e)
> at
> System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification
> (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral,
> PublicKeyToken=7cec85d7bea7798e)
> at
> Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker+<InvokeActionMethodAsync>d__12.MoveNext
> (Microsoft.AspNetCore.Mvc.Core, Version=2.0.2.0, Culture=neutral,
> PublicKeyToken=adb9793829ddae60)
> at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw
> (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral,
> PublicKeyToken=7cec85d7bea7798e)
> at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess
> (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral,
> PublicKeyToken=7cec85d7bea7798e)
> at
> Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker+<InvokeNextActionFilterAsync>d__10.MoveNext
> (Microsoft.AspNetCore.Mvc.Core, Version=2.0.2.0, Culture=neutral,
> PublicKeyToken=adb9793829ddae60)
> at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw
> (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral,
> PublicKeyToken=7cec85d7bea7798e)
> at Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.Rethrow
> (Microsoft.AspNetCore.Mvc.Core, Version=2.0.2.0, Culture=neutral,
> PublicKeyToken=adb9793829ddae60)
> at Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.Next
> (Microsoft.AspNetCore.Mvc.Core, Version=2.0.2.0, Culture=neutral,
> PublicKeyToken=adb9793829ddae60)
> at
> Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker+<InvokeInnerFilterAsync>d__14.MoveNext
> (Microsoft.AspNetCore.Mvc.Core, Version=2.0.2.0, Culture=neutral,
> PublicKeyToken=adb9793829ddae60)
> at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw
> (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral,
> PublicKeyToken=7cec85d7bea7798e)
> at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess
> (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral,
> PublicKeyToken=7cec85d7bea7798e)
> at
> Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker+<InvokeNextExceptionFilterAsync>d__23.MoveNext
> (Microsoft.AspNetCore.Mvc.Core, Version=2.0.2.0, Culture=neutral,
> PublicKeyToken=adb9793829ddae60)
> Inner exception System.Net.Http.WinHttpException handled at
> ProjectX.Repository.Cosmos.UnitOfWork+<DeletePersonAsync>d__32.MoveNext:
> at System.Net.WebSockets.WinHttpWebSocket.InternalCloseAsync
> (System.Net.WebSockets.Client, Version=4.1.0.0, Culture=neutral,
> PublicKeyToken=b03f5f7f11d50a3a)
> at System.Net.WebSockets.WinHttpWebSocket+<CloseAsync>d__30.MoveNext
> (System.Net.WebSockets.Client, Version=4.1.0.0, Culture=neutral,
> PublicKeyToken=b03f5f7f11d50a3a)
> at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw
> (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral,
> PublicKeyToken=7cec85d7bea7798e)
> at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess
> (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral,
> PublicKeyToken=7cec85d7bea7798e)
> at
> System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification
> (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral,
> PublicKeyToken=7cec85d7bea7798e)
> at Gremlin.Net.Driver.WebSocketConnection+<CloseAsync>d__4.MoveNext
> (Gremlin.Net, Version=3.4.0.0, Culture=neutral,
> PublicKeyToken=d2035e9aa387a711)
> at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw
> (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral,
> PublicKeyToken=7cec85d7bea7798e)
> at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess
> (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral,
> PublicKeyToken=7cec85d7bea7798e)
> at
> System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification
> (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral,
> PublicKeyToken=7cec85d7bea7798e)
> at Gremlin.Net.Driver.Connection+<CloseAsync>d__10.MoveNext (Gremlin.Net,
> Version=3.4.0.0, Culture=neutral, PublicKeyToken=d2035e9aa387a711)
> at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw
> (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral,
> PublicKeyToken=7cec85d7bea7798e)
> at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess
> (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral,
> PublicKeyToken=7cec85d7bea7798e)
> at
> System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification
> (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral,
> PublicKeyToken=7cec85d7bea7798e)
> at Gremlin.Net.Driver.ConnectionPool+<TeardownAsync>d__16.MoveNext
> (Gremlin.Net, Version=3.4.0.0, Culture=neutral,
> PublicKeyToken=d2035e9aa387a711)
> at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw
> (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral,
> PublicKeyToken=7cec85d7bea7798e)
> at Gremlin.Net.Process.Utils.WaitUnwrap (Gremlin.Net, Version=3.4.0.0,
> Culture=neutral, PublicKeyToken=d2035e9aa387a711)
> at Gremlin.Net.Driver.ConnectionPool.CloseAndRemoveAllConnections
> (Gremlin.Net, Version=3.4.0.0, Culture=neutral,
> PublicKeyToken=d2035e9aa387a711)
> at Gremlin.Net.Driver.ConnectionPool.AddConnectionIfOpen (Gremlin.Net,
> Version=3.4.0.0, Culture=neutral, PublicKeyToken=d2035e9aa387a711)
> at Gremlin.Net.Driver.ProxyConnection.Dispose (Gremlin.Net, Version=3.4.0.0,
> Culture=neutral, PublicKeyToken=d2035e9aa387a711)
> at Gremlin.Net.Driver.GremlinClient+<SubmitAsync>d__6`1.MoveNext
> (Gremlin.Net, Version=3.4.0.0, Culture=neutral,
> PublicKeyToken=d2035e9aa387a711)
> at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw
> (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral,
> PublicKeyToken=7cec85d7bea7798e)
> at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess
> (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral,
> PublicKeyToken=7cec85d7bea7798e)
> at
> System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification
> (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral,
> PublicKeyToken=7cec85d7bea7798e)
> at Gremlin.Net.Driver.GremlinClientExtensions+<SubmitAsync>d__4`1.MoveNext
> (Gremlin.Net, Version=3.4.0.0, Culture=neutral,
> PublicKeyToken=d2035e9aa387a711)
> at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw
> (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral,
> PublicKeyToken=7cec85d7bea7798e)
> at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess
> (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral,
> PublicKeyToken=7cec85d7bea7798e)
> at
> System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification
> (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral,
> PublicKeyToken=7cec85d7bea7798e)
> at ProjectX.Repository.Cosmos.Writer+<ExecuteGremlinCommand>d__7.MoveNext
> (<...removed...>)
> at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw
> (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral,
> PublicKeyToken=7cec85d7bea7798e)
> at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess
> (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral,
> PublicKeyToken=7cec85d7bea7798e)
> at
> System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification
> (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral,
> PublicKeyToken=7cec85d7bea7798e)
> at ProjectX.Repository.Cosmos.UnitOfWork+<DeletePersonAsync>d__32.MoveNext
> (<...removed...>)
> {code}
> Thank you so much for looking into this.
> We're hoping for a reasonably quick fix or good work-around strategy.
> Sami Abbushi
>
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