MS DTC 使用 Entity Framework Core 取消事务

Question

我收到一个

System.Data.SqlClient.SqlException (0x80131904)：Microsoft 分布式事务协调器 (MS DTC) 已取消分布式事务。

使用 EF Core 2.1 时出错。 完整的堆栈跟踪位于此消息的底部。

下面是基本过程：

1. 读取来自 Kafka 的请求消息
2. 将消息写入 SQL Server 上的一组“原始”表
3. 调用从原始表读取消息、验证传入数据、转换数据中的几个字段并写入一组“生产”表的存储过程。
4. 从生产表中检索转换后的请求。
5. 通过主要由微服务组成的编排来处理请求，随着编排取得进展，将更新保存回生产表。

MSDTC 错误在第 3 步间歇性地发生，但经常发生。第 2 步和第 3 步中的原始表和生产表位于同一 SQL Server 上的不同数据库中。 作为第 5 步的一部分，还调用了一个单独的 SQL Server，但我得到的唯一错误是第 3 步中的 MSDTC 取消。

我知道 .NET Core 不支持 MSDTC，但我不确定为什么这个过程的任何部分都被提升为 MSDTC。 我没有任何显式事务，并且通过 appsettings 中的 ConnectionStrings 为每个数据库标准化了连接字符串。

任何见解表示赞赏。

authAPI.usp_AuthTransform @CorrelationID, @AuthStateID OUT, @CorrelationSeqID OUT

System.Data.SqlClient.SqlException (0x80131904): The Microsoft Distributed Transaction Coordinator (MS DTC) has cancelled the distributed transaction.
   at System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection, Action`1 wrapCloseInAction)
   at System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection, Action`1 wrapCloseInAction)
   at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj, Boolean callerHasConnectionLock, Boolean asyncClose)
   at System.Data.SqlClient.TdsParser.TryRun(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj, Boolean& dataReady)
   at System.Data.SqlClient.SqlCommand.FinishExecuteReader(SqlDataReader ds, RunBehavior runBehavior, String resetOptionsString)
   at System.Data.SqlClient.SqlCommand.CompleteAsyncExecuteReader()
   at System.Data.SqlClient.SqlCommand.EndExecuteNonQueryInternal(IAsyncResult asyncResult)
   at System.Data.SqlClient.SqlCommand.EndExecuteNonQuery(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 Microsoft.EntityFrameworkCore.Storage.Internal.RelationalCommand.ExecuteAsync(IRelationalConnection connection, DbCommandMethod executeMethod, IReadOnlyDictionary`2 parameterValues, CancellationToken cancellationToken)
ClientConnectionId:24a868f2-3f00-4e07-92fd-7537beb23d33
Error Number:1206,State:118,Class:18
Exception thrown: 'System.Data.SqlClient.SqlException' in System.Private.CoreLib.dll
Exception thrown: 'System.Data.SqlClient.SqlException' in System.Private.CoreLib.dll
'dotnet.exe' (CoreCLR: clrhost): Loaded 'C:\Program Files\dotnet\shared\Microsoft.NETCore.App\2.1.15\System.IO.MemoryMappedFiles.dll'. Skipped loading symbols. Module is optimized and the debugger option 'Just My Code' is enabled.
nH.AuthRequestIntake.nHDischarge.ReceiveHandler:Error: 353c5648-5ef0-44b9-bd5b-ac1395243ac6-System.Data.SqlClient.SqlException (0x80131904): The Microsoft Distributed Transaction Coordinator (MS DTC) has cancelled the distributed transaction.
   at System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection, Action`1 wrapCloseInAction)
   at System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection, Action`1 wrapCloseInAction)
   at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj, Boolean callerHasConnectionLock, Boolean asyncClose)
   at System.Data.SqlClient.TdsParser.TryRun(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj, Boolean& dataReady)
   at System.Data.SqlClient.SqlCommand.FinishExecuteReader(SqlDataReader ds, RunBehavior runBehavior, String resetOptionsString)
   at System.Data.SqlClient.SqlCommand.CompleteAsyncExecuteReader()
   at System.Data.SqlClient.SqlCommand.EndExecuteNonQueryInternal(IAsyncResult asyncResult)
   at System.Data.SqlClient.SqlCommand.EndExecuteNonQuery(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 Microsoft.EntityFrameworkCore.Storage.Internal.RelationalCommand.ExecuteAsync(IRelationalConnection connection, DbCommandMethod executeMethod, IReadOnlyDictionary`2 parameterValues, CancellationToken cancellationToken)
   at Microsoft.EntityFrameworkCore.RelationalDatabaseFacadeExtensions.ExecuteSqlCommandAsync(DatabaseFacade databaseFacade, RawSqlString sql, IEnumerable`1 parameters, CancellationToken cancellationToken)
   at nH.AuthRequestIntake.Domain.AuthRequestReceivedEventHandler`2.TransformToAuthRequestAsync(AuthRequest rawRequest, IIncomingDbContext dbContext) in C:\Users\scott.carter\source\repos\authrequestintake\nH.AuthRequestIntake.Domain\AuthRequestReceivedEventHandler.cs:line 170
   at nH.AuthRequestIntake.Domain.AuthRequestReceivedEventHandler`2.HandleAsync(IDomainEvent domainEvent) in C:\Users\scott.carter\source\repos\authrequestintake\nH.AuthRequestIntake.Domain\AuthRequestReceivedEventHandler.cs:line 68
ClientConnectionId:24a868f2-3f00-4e07-92fd-7537beb23d33
Error Number:1206,State:118,Class:18

System.Data.SqlClient.SqlException (0x80131904): The Microsoft Distributed Transaction Coordinator (MS DTC) has cancelled the distributed transaction.
   at System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection, Action`1 wrapCloseInAction)
   at System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection, Action`1 wrapCloseInAction)
   at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj, Boolean callerHasConnectionLock, Boolean asyncClose)
   at System.Data.SqlClient.TdsParser.TryRun(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj, Boolean& dataReady)
   at System.Data.SqlClient.SqlCommand.FinishExecuteReader(SqlDataReader ds, RunBehavior runBehavior, String resetOptionsString)
   at System.Data.SqlClient.SqlCommand.CompleteAsyncExecuteReader()
   at System.Data.SqlClient.SqlCommand.EndExecuteNonQueryInternal(IAsyncResult asyncResult)
   at System.Data.SqlClient.SqlCommand.EndExecuteNonQuery(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 Microsoft.EntityFrameworkCore.Storage.Internal.RelationalCommand.ExecuteAsync(IRelationalConnection connection, DbCommandMethod executeMethod, IReadOnlyDictionary`2 parameterValues, CancellationToken cancellationToken)
   at Microsoft.EntityFrameworkCore.RelationalDatabaseFacadeExtensions.ExecuteSqlCommandAsync(DatabaseFacade databaseFacade, RawSqlString sql, IEnumerable`1 parameters, CancellationToken cancellationToken)
   at nH.AuthRequestIntake.Domain.AuthRequestReceivedEventHandler`2.TransformToAuthRequestAsync(AuthRequest rawRequest, IIncomingDbContext dbContext) in C:\Users\scott.carter\source\repos\authrequestintake\nH.AuthRequestIntake.Domain\AuthRequestReceivedEventHandler.cs:line 170
   at nH.AuthRequestIntake.Domain.AuthRequestReceivedEventHandler`2.HandleAsync(IDomainEvent domainEvent) in C:\Users\scott.carter\source\repos\authrequestintake\nH.AuthRequestIntake.Domain\AuthRequestReceivedEventHandler.cs:line 68
ClientConnectionId:24a868f2-3f00-4e07-92fd-7537beb23d33
Error Number:1206,State:118,Class:18```

Answer 1

结果证明这是一条红鲱鱼。 我在某处读到 MSDTC 问题有时会掩盖其他问题，并建议进行数据库跟踪。 果然，跟踪显示临时表在负载下跨连接被删除，所以我们现在正在努力解决这个问题。

感谢所有阅读并考虑问题的人！