更新(2/8/17):
请参阅下面的答案。
更新(2017 年 2 月 7 日):
我发现重新启动可以让我从 Visual Studio 2015 成功运行 Web 应用，并多次到达端点。但是，当我停止该应用程序并重新启动它时，它很可能会失败。然后它会反复失败，直到我重新启动计算机。重新启动 VS'15 还不够。
一旦开始失败，从 VS Code 或使用 dotnet.exe 从命令行运行应用程序会出现相同的行为。
原始帖子:
我们设置了一个微服务系统，可以从几个 API 和 Azure Functions 调用 DocumentDB 集合。它会间歇性地失败，并出现来自 API 端的 SocketException(GoneException 嵌套在其中)。据我们所知，鉴于它偶尔会工作，调用它的代码大部分是正确的。 Azure Functions 可以正常工作。
编辑澄清:“间歇性”是指它每天可能会短暂工作一两次，然后在当天剩余的时间里进入失败状态，没有任何调用通过。这不像百分之一左右的调用会失败。这更像是 1 或 2 次成功调用后不间断的失败。
我能够通过编写一个简单的控制台应用程序来从 DocumentDB 读取并将结果打印到调试输出来重新创建相同的异常。它运行一两次没有任何问题，然后每次都开始抛出以下异常。有时它会这样做几个小时，然后再允许更多的调用通过，然后再次抛出。
虽然下面的测试器很原始，但主要 API 充分利用了 vNext 项目结构。它使用单例 DocumentClient 进行连接(通过 native DI 注入(inject))，并且从 Controller 到调用数据库的服务层几乎完全异步。我们使用单独的库来管理对 DocumentDB 的访问(如果集合不存在则创建集合、添加扩展方法、简单的 CRUD 操作等)，但如下所示直接调用会产生相同的结果。
我注意到的一件事是，对于 DocumentDB 客户端的 Core 版本 ("Microsoft.Azure.DocumentDB.Core": "1.0.0")，它的成功率比它要高得多适用于 net46 版本。由于其他库的原因，我们的 API 需要 4.6。
我可以在多台机器、多个网络、多种连接类型上重新创建它。
问题:为什么我们会遇到此异常以及如何修复它？
Azure 信息:
- 美国东部 2
- 1000 RU/秒
- 标准层
- session 一致性
惰性索引策略:
{ "indexingMode": "惰性", “自动”:正确， “包含路径”:[{ “小路”: ”/*”， “索引”:[{ “种类”:“范围”， “数据类型”:“数字”， “精度”:-1 },{ “种类”:“哈希”， “数据类型”:“字符串”， “精度”:3 }] }], “排除路径”:[] }
测试类
using System;
using System.Diagnostics;
using System.Threading.Tasks;
using Microsoft.Azure.Documents.Client;
using Microsoft.Azure.Documents.Linq;
using Newtonsoft.Json;
namespace TestConnection
{
public class Program
{
public static void Main(string[] args)
{
try
{
using (var client = new DocumentClient(
new Uri("https://<our-docdb-name>.documents.azure.com:443/"),
"our access key",
new ConnectionPolicy
{
ConnectionMode = ConnectionMode.Direct,
ConnectionProtocol = Protocol.Tcp
}))
{
var query = client.CreateDocumentQuery(UriFactory.CreateCollectionUri("Imports", "User"),
"SELECT * FROM c where c.importId = \"816d8e92-bd08-4705-9989-09a0ece5892a\"");
var docQuery = query.AsDocumentQuery();
GetResults(docQuery).Wait();
Debug.WriteLine("done");
}
}
catch (Exception e)
{
Debug.WriteLine(e);
}
}
private static async Task GetResults(IDocumentQuery<dynamic> docQuery)
{
Debug.WriteLine("getting");
var results = await docQuery.ExecuteNextAsync();
Debug.WriteLine(JsonConvert.SerializeObject(results));
}
}
}
project.json
{
"version": "1.0.0-*",
"buildOptions": {
"debugType": "portable",
"emitEntryPoint": true
},
"dependencies": {
"Microsoft.Azure.DocumentDB": "1.11.3"
},
"frameworks": {
"net46": {}
}
}
异常
'TestConnection.exe' (CLR v4.0.30319: DefaultDomain): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_64\mscorlib\v4.0_4.0.0.0__b77a5c561934e089\mscorlib.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'TestConnection.exe' (CLR v4.0.30319: DefaultDomain): Loaded 'C:\projects\TestConnection\src\TestConnection\bin\Debug\net46\win7-x64\TestConnection.exe'. Symbols loaded.
'TestConnection.exe' (CLR v4.0.30319: TestConnection.exe): Loaded 'C:\projects\TestConnection\src\TestConnection\bin\Debug\net46\win7-x64\Microsoft.Azure.Documents.Client.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'TestConnection.exe' (CLR v4.0.30319: TestConnection.exe): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System\v4.0_4.0.0.0__b77a5c561934e089\System.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'TestConnection.exe' (CLR v4.0.30319: TestConnection.exe): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System.Core\v4.0_4.0.0.0__b77a5c561934e089\System.Core.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'TestConnection.exe' (CLR v4.0.30319: TestConnection.exe): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System.Configuration\v4.0_4.0.0.0__b03f5f7f11d50a3a\System.Configuration.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'TestConnection.exe' (CLR v4.0.30319: TestConnection.exe): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System.Net.Http\v4.0_4.0.0.0__b03f5f7f11d50a3a\System.Net.Http.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'TestConnection.exe' (CLR v4.0.30319: TestConnection.exe): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System.Xml\v4.0_4.0.0.0__b77a5c561934e089\System.Xml.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'TestConnection.exe' (CLR v4.0.30319: TestConnection.exe): Loaded 'C:\projects\TestConnection\src\TestConnection\bin\Debug\net46\win7-x64\Newtonsoft.Json.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
DocDBTrace Information: 0 : DocumentClient with id 1 initialized at endpoint: https://<our-docdb-name>.documents.azure.com/ with ConnectionMode: Direct, connection Protocol: Tcp, and consistency level: null
getting
'TestConnection.exe' (CLR v4.0.30319: TestConnection.exe): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\Microsoft.CSharp\v4.0_4.0.0.0__b03f5f7f11d50a3a\Microsoft.CSharp.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'TestConnection.exe' (CLR v4.0.30319: TestConnection.exe): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System.Numerics\v4.0_4.0.0.0__b77a5c561934e089\System.Numerics.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'TestConnection.exe' (CLR v4.0.30319: TestConnection.exe): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System.Runtime.Serialization\v4.0_4.0.0.0__b77a5c561934e089\System.Runtime.Serialization.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'TestConnection.exe' (CLR v4.0.30319: TestConnection.exe): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_MSIL\System.Xml.Linq\v4.0_4.0.0.0__b77a5c561934e089\System.Xml.Linq.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
'TestConnection.exe' (CLR v4.0.30319: TestConnection.exe): Loaded 'C:\WINDOWS\Microsoft.Net\assembly\GAC_64\System.Data\v4.0_4.0.0.0__b77a5c561934e089\System.Data.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
DocDBTrace Information: 0 : Set WriteEndpoint https://<our-docdb-name>-eastus2.documents.azure.com/ ReadEndpoint https://<our-docdb-name>-eastus2.documents.azure.com/
DocDBTrace Information: 0 : Mapped resourceName dbs/Imports/colls/User to resourceId u81pAO1OFwA=. '00000000-0000-0000-0000-000000000000'
DocDBTrace Information: 0 : Mapped resourceName dbs/Imports/colls/User to resourceId u81pAO1OFwA=. '00000000-0000-0000-0000-000000000000'
The thread 0x3888 has exited with code 0 (0x0).
The thread 0x2c20 has exited with code 0 (0x0).
The thread 0x39fc has exited with code 0 (0x0).
The thread 0x3610 has exited with code 0 (0x0).
The thread 0x3824 has exited with code 0 (0x0).
The thread 0x33d8 has exited with code 0 (0x0).
The thread 0x38d0 has exited with code 0 (0x0).
DocDBTrace Information: 0 : GetOpenConnection failed: RID: dbs/Imports/colls/User, ResourceType Document, Op: (operationType: Query, resourceType: Document), Address: rntbd://bn6prdddc05-docdb-1.documents.azure.com:18817/apps/d54f0cf3-23d7-4050-9810-99d319d441a8/services/d77a45f3-5611-4c1d-a08e-0f3ef60a31d9/partitions/wkjhgkwj-c85a-4b08-b026-6bc8010b1bb5/replicas/131287308072454308s/, Exception: Microsoft.Azure.Documents.GoneException: Message: The requested resource is no longer available at the server.
ActivityId: d71bc76d-1411-414d-a844-9f76a46ebcfd, Request URI: rntbd://bn6prdddc05-docdb-1.documents.azure.com:18817/apps/d54f0cf3-23d7-4050-9810-99d319d441a8/services/d77a45f3-5611-4c1d-a08e-0f3ef60a31d9/partitions/wkjhgkwj-c85a-4b08-b026-6bc8010b1bb5/replicas/131287308072454308s/ ---> System.Net.Sockets.SocketException: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond 13.68.28.135:18817
at System.Net.Sockets.Socket.EndConnect(IAsyncResult asyncResult)
at System.Net.Sockets.TcpClient.EndConnect(IAsyncResult asyncResult)
at System.Threading.Tasks.TaskFactory`1.FromAsyncCoreLogic(IAsyncResult iar, Func`2 endFunction, Action`1 endAction, Task`1 promise, Boolean requiresSynchronization)
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at Microsoft.Azure.Documents.RntbdConnection.<OpenSocket>d__1c.MoveNext()
--- End of inner exception stack trace ---
at Microsoft.Azure.Documents.RntbdConnection.<OpenSocket>d__1c.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at Microsoft.Azure.Documents.RntbdConnection.<Open>d__0.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at Microsoft.Azure.Documents.RntbdConnectionDispenser.<OpenNewConnection>d__0.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at Microsoft.Azure.Documents.ConnectionPool.<GetOpenConnection>d__0.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at Microsoft.Azure.Documents.ConnectionPoolManager.<GetOpenConnection>d__0.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at Microsoft.Azure.Documents.RntbdTransportClient.<InvokeStoreAsync>d__0.MoveNext()
DocDBTrace Information: 0 : Exception Microsoft.Azure.Documents.GoneException: Message: The requested resource is no longer available at the server.
ActivityId: d71bc76d-1411-414d-a844-9f76a46ebcfd, Request URI: rntbd://bn6prdddc05-docdb-1.documents.azure.com:18817/apps/d54f0cf3-23d7-4050-9810-99d319d441a8/services/d77a45f3-5611-4c1d-a08e-0f3ef60a31d9/partitions/wkjhgkwj-c85a-4b08-b026-6bc8010b1bb5/replicas/131287308072454308s/ ---> System.Net.Sockets.SocketException: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond 13.68.28.135:18817
at System.Net.Sockets.Socket.EndConnect(IAsyncResult asyncResult)
at System.Net.Sockets.TcpClient.EndConnect(IAsyncResult asyncResult)
at System.Threading.Tasks.TaskFactory`1.FromAsyncCoreLogic(IAsyncResult iar, Func`2 endFunction, Action`1 endAction, Task`1 promise, Boolean requiresSynchronization)
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at Microsoft.Azure.Documents.RntbdConnection.<OpenSocket>d__1c.MoveNext()
--- End of inner exception stack trace ---
at Microsoft.Azure.Documents.RntbdConnection.<OpenSocket>d__1c.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at Microsoft.Azure.Documents.RntbdConnection.<Open>d__0.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at Microsoft.Azure.Documents.RntbdConnectionDispenser.<OpenNewConnection>d__0.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at Microsoft.Azure.Documents.ConnectionPool.<GetOpenConnection>d__0.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at Microsoft.Azure.Documents.ConnectionPoolManager.<GetOpenConnection>d__0.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at Microsoft.Azure.Documents.RntbdTransportClient.<InvokeStoreAsync>d__0.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at Microsoft.Azure.Documents.StoreReader.<CompleteActivity>d__1f.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at Microsoft.Azure.Documents.StoreReader.<ReadMultipleReplicasInternalAsync>d__a.MoveNext() is thrown while doing readMany
DocDBTrace Warning: 0 : Received gone exception, will retry, Microsoft.Azure.Documents.GoneException: Message: The requested resource is no longer available at the server.
ActivityId: d71bc76d-1411-414d-a844-9f76a46ebcfd, Request URI: rntbd://bn6prdddc05-docdb-1.documents.azure.com:18817/apps/d54f0cf3-23d7-4050-9810-99d319d441a8/services/d77a45f3-5611-4c1d-a08e-0f3ef60a31d9/partitions/wkjhgkwj-c85a-4b08-b026-6bc8010b1bb5/replicas/131287308072454308s/ ---> System.Net.Sockets.SocketException: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond 13.68.28.135:18817
at System.Net.Sockets.Socket.EndConnect(IAsyncResult asyncResult)
at System.Net.Sockets.TcpClient.EndConnect(IAsyncResult asyncResult)
at System.Threading.Tasks.TaskFactory`1.FromAsyncCoreLogic(IAsyncResult iar, Func`2 endFunction, Action`1 endAction, Task`1 promise, Boolean requiresSynchronization)
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at Microsoft.Azure.Documents.RntbdConnection.<OpenSocket>d__1c.MoveNext()
--- End of inner exception stack trace ---
at Microsoft.Azure.Documents.StoreReader.<ReadMultipleReplicasInternalAsync>d__a.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at Microsoft.Azure.Documents.StoreReader.<ReadMultipleReplicaAsync>d__0.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at Microsoft.Azure.Documents.ConsistencyReader.<ReadSessionAsync>d__8.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at Microsoft.Azure.Documents.ReplicatedResourceClient.<InvokeAsync>d__b.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at Microsoft.Azure.Documents.ReplicatedResourceClient.<>c__DisplayClass1.<<InvokeAsync>b__0>d__3.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at Microsoft.Azure.Documents.BackoffRetryUtility`1.<>c__DisplayClassf`1.<<ExecuteAsync>b__d>d__11.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at Microsoft.Azure.Documents.BackoffRetryUtility`1.<ExecuteRetry>d__1b.MoveNext()
The thread 0x36e4 has exited with code 0 (0x0).
The thread 0x3adc has exited with code 0 (0x0).
The thread 0x3a68 has exited with code 0 (0x0).
The thread 0x18b0 has exited with code 0 (0x0).
...
/* The above repeats about 3 more times.*/
...
The program '[14648] TestConnection.exe' has exited with code 0 (0x0).
最佳答案
原来是我们的企业Bitdefender Endpoint Security导致了该问题。我们最初并没有怀疑它，因为它非常清楚地记录了 dotnet.exe 已列入白名单，并且每当我们运行该应用程序时都允许在适当的端口上进行通信。我们卸载了它，问题就消失了。我们正在调查到底是什么原因导致了这个问题，但至少我们知道有一个临时解决方案，并且最初的问题与代码无关。希望这对某人有帮助。
关于c# - Azure DocumentDB 偶尔抛出 SocketException/GoneException，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/42070928/