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我有一个使用 VS2013 创建的 C# 工作者角色。这工作了一年多。

我最近将我的 VS 升级到2015版（+ Azure SDK 2.7），现在当我尝试使用 Azure 模拟器模拟我的代码或将此代码上传到云时，我遇到了一个问题：

[fabric] Role Instance: deployment27(109).***.***.0
[fabric] Role state Busy
[runtime] Role entrypoint . CALLING   OnStart(): Microsoft.WindowsAzure.ServiceRuntime.DefaultEntryPoint
[runtime] Role entrypoint . COMPLETED OnStart(): Microsoft.WindowsAzure.ServiceRuntime.DefaultEntryPoint
[runtime] Role entrypoint . CALLING   Run(): Microsoft.WindowsAzure.ServiceRuntime.DefaultEntryPoint
[runtime] Role entrypoint . COMPLETED Run() ==> ROLE RECYCLING INITIATED: Microsoft.WindowsAzure.ServiceRuntime.DefaultEntryPoint
[runtime] Role instance recycling is starting
[runtime] Role entrypoint . CALLING   OnStop(): Microsoft.WindowsAzure.ServiceRuntime.DefaultEntryPoint
[runtime] Role entrypoint . CALLING   OnStopping()
[runtime] Role entrypoint . COMPLETED OnStop(): Microsoft.WindowsAzure.ServiceRuntime.DefaultEntryPoint
[fabric] Role state Unhealthy
[fabric] Role state Suspended
[fabric] Role state Busy
[fabric] Role state Unhealthy
[runtime] Role entrypoint . CALLING   OnStart(): Microsoft.WindowsAzure.ServiceRuntime.DefaultEntryPoint
[runtime] Role entrypoint . COMPLETED OnStart(): Microsoft.WindowsAzure.ServiceRuntime.DefaultEntryPoint
[runtime] Role entrypoint . CALLING   Run(): Microsoft.WindowsAzure.ServiceRuntime.DefaultEntryPoint
[runtime] Role entrypoint . COMPLETED Run() ==> ROLE RECYCLING INITIATED: Microsoft.WindowsAzure.ServiceRuntime.DefaultEntryPoint
[runtime] Role instance recycling is starting
[runtime] Role entrypoint . CALLING   OnStop(): Microsoft.WindowsAzure.ServiceRuntime.DefaultEntryPoint
[runtime] Role entrypoint . CALLING   OnStopping()
[runtime] Role entrypoint . COMPLETED OnStop(): Microsoft.WindowsAzure.ServiceRuntime.DefaultEntryPoint
[runtime] Role entrypoint . CALLING   OnStart(): Microsoft.WindowsAzure.ServiceRuntime.DefaultEntryPoint
[runtime] Role entrypoint . COMPLETED OnStart(): Microsoft.WindowsAzure.ServiceRuntime.DefaultEntryPoint
[runtime] Role entrypoint . CALLING   Run(): Microsoft.WindowsAzure.ServiceRuntime.DefaultEntryPoint
[runtime] Role entrypoint . COMPLETED Run() ==> ROLE RECYCLING INITIATED: Microsoft.WindowsAzure.ServiceRuntime.DefaultEntryPoint
[runtime] Role instance recycling is starting
[runtime] Role entrypoint . CALLING   OnStop(): Microsoft.WindowsAzure.ServiceRuntime.DefaultEntryPoint
[runtime] Role entrypoint . CALLING   OnStopping()
[runtime] Role entrypoint . COMPLETED OnStop(): Microsoft.WindowsAzure.ServiceRuntime.DefaultEntryPoint
[fabric] Role state Busy
[fabric] Role state Suspended
[runtime] Role entrypoint . CALLING   OnStart(): Microsoft.WindowsAzure.ServiceRuntime.DefaultEntryPoint
[runtime] Role entrypoint . COMPLETED OnStart(): Microsoft.WindowsAzure.ServiceRuntime.DefaultEntryPoint
[runtime] Role entrypoint . CALLING   Run(): Microsoft.WindowsAzure.ServiceRuntime.DefaultEntryPoint
[runtime] Role entrypoint . COMPLETED Run() ==> ROLE RECYCLING INITIATED: Microsoft.WindowsAzure.ServiceRuntime.DefaultEntryPoint
[runtime] Role instance recycling is starting
[runtime] Role entrypoint . CALLING   OnStop(): Microsoft.WindowsAzure.ServiceRuntime.DefaultEntryPoint
[runtime] Role entrypoint . CALLING   OnStopping()
[runtime] Role entrypoint . COMPLETED OnStop(): Microsoft.WindowsAzure.ServiceRuntime.DefaultEntryPoint
[fabric] Role state Busy
[fabric] Role state Unhealthy
[fabric] Role state Suspended
[fabric] Role state Busy
[runtime] Role entrypoint . CALLING   OnStart(): Microsoft.WindowsAzure.ServiceRuntime.DefaultEntryPoint
[runtime] Role entrypoint . COMPLETED OnStart(): Microsoft.WindowsAzure.ServiceRuntime.DefaultEntryPoint
[runtime] Role entrypoint . CALLING   Run(): Microsoft.WindowsAzure.ServiceRuntime.DefaultEntryPoint
[runtime] Role entrypoint . COMPLETED Run() ==> ROLE RECYCLING INITIATED: Microsoft.WindowsAzure.ServiceRuntime.DefaultEntryPoint
[runtime] Role instance recycling is starting
[runtime] Role entrypoint . CALLING   OnStop(): Microsoft.WindowsAzure.ServiceRuntime.DefaultEntryPoint
[runtime] Role entrypoint . CALLING   OnStopping()
[runtime] Role entrypoint . COMPLETED OnStop(): Microsoft.WindowsAzure.ServiceRuntime.DefaultEntryPoint
[runtime] Role entrypoint . CALLING   OnStart(): Microsoft.WindowsAzure.ServiceRuntime.DefaultEntryPoint
[runtime] Role entrypoint . COMPLETED OnStart(): Microsoft.WindowsAzure.ServiceRuntime.DefaultEntryPoint
[runtime] Role entrypoint . CALLING   Run(): Microsoft.WindowsAzure.ServiceRuntime.DefaultEntryPoint
[runtime] Role entrypoint . COMPLETED Run() ==> ROLE RECYCLING INITIATED: Microsoft.WindowsAzure.ServiceRuntime.DefaultEntryPoint
[runtime] Role instance recycling is starting
[runtime] Role entrypoint . CALLING   OnStop(): Microsoft.WindowsAzure.ServiceRuntime.DefaultEntryPoint
[runtime] Role entrypoint . CALLING   OnStopping()
[runtime] Role entrypoint . COMPLETED OnStop(): Microsoft.WindowsAzure.ServiceRuntime.DefaultEntryPoint
[fabric] Role state Suspended
[fabric] Role state Busy
[fabric] Role state Unhealthy
[fabric] Role state Suspended
[fabric] Role state Busy

您可以在此日志中看到工作人员在启动时遇到了一些问题。因此，启动失败（然后调用 OnStop...）。这个循环永远不会结束。

我试图了解问题出在哪里，但一无所获。我尝试通过在以下位置插入断点来调试代码：Run、RunAsync、OnStart 和 OnStop。这是无奈的，因为这些断点从未在应用程序生命周期中触发。

我在这里读到这个问题在 F# 中是众所周知的，但我没有使用 F#。

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