Using Mysql 5.5.44-0ubuntu0.12.04.1 get error about cap HOT 15 CLOSED

把你项目上传到github我看一下配置和结构

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@yuleyule66 请查看

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PS:　同时启动了这两个项目

 "MultiProjectConfigurations": {
    "Quartz + CAP": {
      "Projects": {
        "AAM.Quartz.Web": {},
        "AAM.Finance.CAP": {}
      }
    }

  }

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无用代码太多了，你可以把没用代码都删除掉，而且我没有数据库也运行不起来，建议能够使用最简单的代码能够把你的问题复现出来。

这个地方是一个长的调用链吗？ 是消费了之后又要发送到其他消息进行消费？ 为什么你的publlish方法没有在事务里面呢？

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好的，我删除了一些没用的代码，去掉了数据库，除了两个cap1 cap2的库，
现在换了cap的两个库的连接串和ＭＱ的配置就可以跑起来的了。

您截图的地方，是长的调用链来的，一批MQ消息消费完后，跟着一个eof结束的标识消息，然后触发下一步汇总的处理，我eof的publish没有包在事务里，因为它是消费结束的标识，没有其它数据库操作事务。

我调整完这些代码后，还使用了Mysql 5.5.44-0ubuntu0.12.04.1测试了一下，问题仍旧，希望能够找到原因，使ＣＡＰ能更完善，非常感谢

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最新的已提交到主分支里

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Hi @ajdwfnhaps ~
我已经在 2.1.2-preview-28879945 版本修复了这个bug，谢谢你的反馈。

如果还有其他问题，可以 reopen 此 issue。

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太好了，非常感谢，我这边已更新测试过了，现在没问题了

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BTW,能否用我这个示例项目修改为异步发送ＭＱ消息测试一下（PublishAsync），我这边测试异步发送就有可能报以下这个错误：

[2017-12-01 15:39:12.3830] [] [ERROR] [AAM.Quartz.Tasks.Finance.AccountPeriodJob]: Job执行中发生错误，ErrMsg:There is already an open DataReader associated with this Connection which must be closed first. System.InvalidOperationException: There is already an open DataReader associated with this Connection which must be closed first. at MySqlConnector.Core.ServerSession.StartQuerying(MySqlCommand command) in C:\projects\mysqlconnector\src\MySqlConnector\Core\ServerSession.cs:line 115 at MySqlConnector.Core.TextCommandExecutor.<ExecuteReaderAsync>d__3.MoveNext() in C:\projects\mysqlconnector\src\MySqlConnector\Core\TextCommandExecutor.cs:line 66 --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at MySqlConnector.Core.TextCommandExecutor.<ExecuteNonQueryAsync>d__1.MoveNext() in C:\projects\mysqlconnector\src\MySqlConnector\Core\TextCommandExecutor.cs:line 25 --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at MySql.Data.MySqlClient.MySqlTransaction.<CommitAsync>d__2.MoveNext() in C:\projects\mysqlconnector\src\MySqlConnector\MySql.Data.MySqlClient\MySqlTransaction.cs:line 27 --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at MySql.Data.MySqlClient.MySqlTransaction.Commit() in C:\projects\mysqlconnector\src\MySqlConnector\MySql.Data.MySqlClient\MySqlTransaction.cs:line 13 at DotNetCore.CAP.Abstractions.CapPublisherBase.ClosedCap() in D:\Work\aimei_finance\trunk\code\aimei_finance\CAP\DotNetCore.CAP\Abstractions\CapPublisherBase.cs:line 162 at DotNetCore.CAP.Abstractions.CapPublisherBase.<PublishWithTransAsync>d__35.MoveNext() in D:\Work\aimei_finance\trunk\code\aimei_finance\CAP\DotNetCore.CAP\Abstractions\CapPublisherBase.cs:line 137 --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at AAM.Quartz.Domain.Service.Finance.AccountPeriodService.<Execute>d__7.MoveNext() in D:\Work\aimei_finance\trunk\code\aimei_finance\Quartz\AAM.Quartz.Domain.Service\Finance\Implementation\AccountPeriodService.cs:line 70 --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at AAM.Quartz.Tasks.Finance.AccountPeriodJob.<Invoke>d__3.MoveNext() in D:\Work\aimei_finance\trunk\code\aimei_finance\Quartz\AAM.Quartz.Task\Finance\AccountPeriodJob.cs:line 32 --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at AAM.Quartz.Tasks.JobBase.<Execute>d__3.MoveNext() in D:\Work\aimei_finance\trunk\code\aimei_finance\Quartz\AAM.Quartz.Task\JobBase.cs:line 40

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你的项目我已经运行起来了，怎么样发消息呢？ @ajdwfnhaps

我需要运行 tables_mysql_innodb.sql 生成表吗？

你还需要补充说明一下你这个项目的运行原理

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@yuleyule66 不需要运行sql的，您跑起来后有这个Job吗，有就手动执行一下就可以发消息的了

如果没有这个Job,需要替换一下quartz.db这个Sqlite数据库,位置在项目AAM.Quartz.Web\Persistence\SQLite

quartz.zip

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启动 AAM.Quartz.Web
访问 ：http://localhost:10931/
出现下面这个错误：

{"Success":-1,"Title":"全局异常处理中间件返回信息","Msg":"错误代码：200，提示信息：Failed to obtain DB connection from data source 'default': Microsoft.Data.Sqlite.SqliteException (0x80004005): SQLite Error 14: 'unable to open database file'.\r\n   at Microsoft.Data.Sqlite.SqliteException.ThrowExceptionForRC(Int32 rc, sqlite3 db)\r\n   at Microsoft.Data.Sqlite.SqliteConnection.Open()\r\n   at Quartz.Impl.AdoJobStore.JobStoreSupport.GetConnection()"}

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不好意思，还有一步，AAM.Quartz.Web 的appsetting.json　要配置一下quartz.db的连接串信息：

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这个问题是由于并发冲突导致。

因为连接池的问题，不同线程获取到了相同的连接，mysql不支持同一个连接一边DataReader读，一边进行Execute。

默认情况下，在PublishAsync内部会开启事务，当CAP检测的外围事务时，会使用外围事务。

手动开启事务，会大大降低这种概率发生的可能性。

using (var trans = await _dbContext.Database.BeginTransactionAsync())
{
    for (int i = 0; i < 1000; i++)
    {
        await _capBus.PublishAsync("sample.test.testsend", DateTime.Now);
    }
    trans.Commit();
}

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好的，谢谢，我稍后就试吓

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