c# - 无法启动 Azure 辅助角色，异常代码 0xe0434352 和 0xC0000035

Question

当在模拟器中本地运行时，Web Worker 工作正常。但是，每当我更新在 Azure VM 上运行的 Web Worker 时，我都会在事件查看器中收到以下异常，并且该角色不会启动:

Application: WaWorkerHost.exe
Framework Version: v4.0.30319
Description: The process was terminated due to an unhandled exception.
Exception Info: System.AggregateException
Stack: at System.Threading.Tasks.Task.Wait(Int32, System.Threading.CancellationToken) at System.Threading.Tasks.Task.Wait()
at Foo.PushProcess.WorkerRole.Run()
at Microsoft.WindowsAzure.ServiceRuntime.RoleEnvironment.StartRoleInternal() at Microsoft.WindowsAzure.ServiceRuntime.Implementation.Loader.RoleRuntimeBridge.b__2() at System.Threading.ExecutionContext.RunInternal(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean)
at System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean)
at System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object)
at System.Threading.ThreadHelper.ThreadStart()

Inner Exception: A task was canceled.

Faulting application name: WaWorkerHost.exe, version: 2.6.1198.712, time stamp: 0x54eba731
Faulting module name: KERNELBASE.dll, version: 6.3.9600.17415, time stamp: 0x54505737
Exception code: 0xe0434352
Fault offset: 0x0000000000008b9c
Faulting process id: 0xfb8
Faulting application start time: 0x01d11e3128981a5d
Faulting application path: E:\base\x64\WaWorkerHost.exe
Faulting module path: D:\Windows\system32\KERNELBASE.dll
Report Id: 30631c5c-8a25-11e5-80c6-000d3a22f3ec
Faulting package full name:
Faulting package-relative application ID:

Session "MA_ETWSESSION_WAD_415df88f8a0447178dbd4c18f1349f0e_Foo.PushProcess_Foo.PushProcess_IN_0" failed to start with the following error: 0xC0000035

这是相关代码:

public override void Run()
{
    Trace.TraceInformation("Foo.PushProcess is running");

    try
    {
        RunAsync(_cancellationTokenSource.Token).Wait(); // This is where the exceptions point to
    }
    catch (Exception ex)
    {
        Trace.TraceError("[WORKER] Run error: " + ex);
    }
    finally
    {
        _runCompleteEvent.Set();
    }
}

public override bool OnStart()
{
    // Set the maximum number of concurrent connections
    ServicePointManager.DefaultConnectionLimit = 12;

    // For information on handling configuration changes
    // see the MSDN topic at http://go.microsoft.com/fwlink/?LinkId=166357.

    bool result = base.OnStart();

    _storageAccount = CloudStorageAccount.Parse(RoleEnvironment.GetConfigurationSettingValue("StorageConnectionString"));
    var queueClient = _storageAccount.CreateCloudQueueClient();
    _pushQueue = queueClient.GetQueueReference("pushes");
    _pushQueue.CreateIfNotExists();

    CreatePushBroker();

    Trace.TraceInformation("Foo.PushProcess has been started");

    return result;
}

private async Task RunAsync(CancellationToken cancellationToken)
{
    while (!cancellationToken.IsCancellationRequested)
    {
        Trace.TraceInformation("Working");
        CloudQueueMessage message = null;
        try
        {
            message = _pushQueue.GetMessage();
            if (message != null)
            {
                ProcessItem(message);
            }
        }
        catch (Exception ex)
        {
            if (message != null && message.DequeueCount > 5)
                _pushQueue.DeleteMessage(message);

            Trace.TraceError("[WORKER] Retrieval Failure: " + ex);
        }

        await Task.Delay(1000, cancellationToken);
    }
}

请注意，一些代码已被省略，但是这些代码都是在初始化后运行的，理论上此异常不会到达。

我完全不知道是什么导致了这个问题。任何帮助将不胜感激 - 即使只是为了帮助我获得有用的异常(exception)。

更新

我现在已经将我的代码减少到下面 - 它就像网络 worker 一样简单 - 并且我仍然遇到异常。我认为要么是旧的工作线程被缓存，要么是部署过程中存在问题。

public override void Run()
{
    Trace.TraceInformation("Foo.PushProcess is running");

    try
    {
        RunAsync(_cancellationTokenSource.Token).Wait(); // This is where the exceptions point to
    }
    catch (Exception ex)
    {
        Trace.TraceError("[WORKER] Run error: " + ex);
    }
    finally
    {
        _runCompleteEvent.Set();
    }
}

public override bool OnStart()
{
    // Set the maximum number of concurrent connections
    ServicePointManager.DefaultConnectionLimit = 12;

    // For information on handling configuration changes
    // see the MSDN topic at http://go.microsoft.com/fwlink/?LinkId=166357.

    bool result = base.OnStart();

    return result;
}

private async Task RunAsync(CancellationToken cancellationToken)
{
    while (!cancellationToken.IsCancellationRequested)
    {
        Trace.TraceInformation("Working");

        // code removed for testing - no work is being done.

        await Task.Delay(1000, cancellationToken);
    }
}

Answer 1

我尝试了一下，但没能在我这边重现。我有来自 MSDN Azure 镜像的 VS 2015 Enterprise (14.0.23107.0 D14REL)，我使用 .Net Fx 版本 4.6 部署运行。我安装了 Azure 工具和 SDK 2.8。我使用 .NET Fx 4.5.2 创建了一个新的 Azure 云服务，并添加了一个辅助角色。

我刚刚运行了您的一些稀疏代码模板，如下所示:

public class WorkerRole : RoleEntryPoint
{
    private readonly CancellationTokenSource cancellationTokenSource = new CancellationTokenSource();
    private readonly ManualResetEvent runCompleteEvent = new ManualResetEvent(false);
    private CloudQueue _pushQueue;
    private CloudStorageAccount _storageAccount;

    public override void Run()
    {
        Trace.TraceInformation("WorkerRole1 is running");

        try
        {
            this.RunAsync(this.cancellationTokenSource.Token).Wait();
        }
        catch (Exception ex)
        {
            Trace.TraceError("[WORKER] Run error: " + ex);
        }
        finally
        {
            this.runCompleteEvent.Set();
        }
    }

    public override bool OnStart()
    {
        // Set the maximum number of concurrent connections
        ServicePointManager.DefaultConnectionLimit = 12;

        // For information on handling configuration changes
        // see the MSDN topic at http://go.microsoft.com/fwlink/?LinkId=166357.
        bool result = base.OnStart();
        _storageAccount = CloudStorageAccount.Parse(RoleEnvironment.GetConfigurationSettingValue("StorageConnectionString"));
        var queueClient = _storageAccount.CreateCloudQueueClient();
        _pushQueue = queueClient.GetQueueReference("pushes");
        _pushQueue.CreateIfNotExists();

        CreatePushBroker();

        Trace.TraceInformation("Foo.PushProcess has been started");

        return result;

    }

    private void CreatePushBroker()
    {
        return;
    }

    public override void OnStop()
    {
        Trace.TraceInformation("WorkerRole1 is stopping");

        this.cancellationTokenSource.Cancel();
        this.runCompleteEvent.WaitOne();

        base.OnStop();

        Trace.TraceInformation("WorkerRole1 has stopped");
    }

    private async Task RunAsync(CancellationToken cancellationToken)
    {
        // TODO: Replace the following with your own logic.
        while (!cancellationToken.IsCancellationRequested)
        {
            Trace.TraceInformation("Working");
            CloudQueueMessage message = null;
            try
            {
                message = _pushQueue.GetMessage();
                if (message != null)
                {
                    ProcessItem(message);
                }
            }
            catch (Exception ex)
            {
                if (message != null && message.DequeueCount > 5)
                    _pushQueue.DeleteMessage(message);

                Trace.TraceError("[WORKER] Retrieval Failure: " + ex);
            }

            await Task.Delay(1000, cancellationToken);

        }
    }

    private void ProcessItem(CloudQueueMessage message)
    {
        return;
    }
}

}

它在本地模拟器中运行没有问题，我继续将其部署到美国西部，并在小型实例虚拟机上启用了 IntelliTrace，但遇到了部署问题。它在 WA-GUEST-OS-4.26_201511-0 guest 工作角色镜像上运行，我能够通过 RDP 连接到计算机，并且没有看到与代码或计算机相关的任何问题。您是否有任何其他二进制文件可能未包含在包中，或者可能存在一些未正确定义的依赖项，或者存储帐户命名问题？

这是我的部署日志。正如您所看到的，大约花了 7 分钟，因为我只是为了好玩而从美国东部提取存储:

1:11:25 AM - 警告:存在软件包验证警告。1:11:26 AM - 检查远程桌面证书...1:11:26 AM - 上传证书...1:11:42 AM - 应用诊断扩展。上午 1:12:24 - 准备部署 AzureCloudService1 - 2015 年 11 月 24 日上午 1:11:19，订阅 ID 为“9a4715f5-acb8-4a18-8259-1c28b92XXXXX”，使用服务管理 URL“https://management.core.windows.net/” '...1:12:24 AM - 正在连接...1:12:24 AM - 正在验证存储帐户“ericgoleastus”...1:12:24 AM - 上传包...1:12:28 AM - 创建...凌晨 1:13:15 - 创建的部署 ID:c5f26568707b46a3bd42466dd0bf7509。1:13:15 AM - 角色 WorkerRole1 的实例 0 正在创建虚拟机凌晨 1:13:15 - 开始...1:13:32 AM - 正在初始化...1:14:36 AM - 角色 WorkerRole1 的实例 0 正在启动虚拟机1:16:11 AM - 角色 WorkerRole1 的实例 0 处于未知状态1:16:43 AM - 角色 WorkerRole1 的实例 0 正忙 详细信息:正在启动角色...系统正在初始化。 [2015-11-24T01:16:08Z]1:19:50 AM - 角色 WorkerRole1 的实例 0 已准备就绪1:19:50 AM - 创建的 Web 应用程序 URL:http://quequetest.cloudapp.net/凌晨 1:19:50 - 完成。

请告诉我们您是否可以在启用 IntelliTrace 的情况下获得更多详细信息。

问候，埃里克