Details
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Bug
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    Status: Closed (View Workflow)
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Major
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    Resolution: Fixed
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    2.5.7
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    None
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    Amazon EC2, CentOS
 
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        MXS-SPRINT-127
 
Description
customer reported the following error when connecting to maxscale 2.5.7 using MySqlConnector(https://www.nuget.org/packages/MySqlConnector/0.61.0) and mariadb version is 10.3.27,
					from application server logs where it was using .net connector
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					---------------------------------------------------------------
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					Â  | 
		
					MySql.Data.MySqlClient.MySqlProtocolException
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					HResult=0x80131509  | 
		
					Message=Packet received out-of-order. Expected 1; got 3.  | 
		
					  Source=mscorlib
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					  StackTrace:
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					   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
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					   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
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					at MySqlConnector.Protocol.Serialization.ProtocolUtility.DoReadPayloadAsync(BufferedByteReader bufferedByteReader, IByteHandler byteHandler, Func`1 getNextSequenceNumber, ArraySegmentHolder`1 previousPayloads, ProtocolErrorBehavior protocolErrorBehavior, IOBehavior ioBehavior) in C:\projects\mysqlconnector\src\MySqlConnector\Protocol\Serialization\ProtocolUtility.cs:line 470  | 
		
					at MySqlConnector.Protocol.Serialization.StandardPayloadHandler.ReadPayloadAsync(ArraySegmentHolder`1 cache, ProtocolErrorBehavior protocolErrorBehavior, IOBehavior ioBehavior) in C:\projects\mysqlconnector\src\MySqlConnector\Protocol\Serialization\StandardPayloadHandler.cs:line 42  | 
		
					at MySqlConnector.Core.ServerSession.ReceiveReplyAsync(IOBehavior ioBehavior, CancellationToken cancellationToken) in C:\projects\mysqlconnector\src\MySqlConnector\Core\ServerSession.cs:line 734  | 
		
					   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
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					   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
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					at MySqlConnector.Core.ServerSession.<ReceiveReplyAsyncAwaited>d__78.MoveNext() in C:\projects\mysqlconnector\src\MySqlConnector\Core\ServerSession.cs:line 769  | 
		
					   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
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					   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
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					at System.Threading.Tasks.ValueTask`1.get_Result()  | 
		
					at MySqlConnector.Core.ServerSession.<TryResetConnectionAsync>d__69.MoveNext() in C:\projects\mysqlconnector\src\MySqlConnector\Core\ServerSession.cs:line 494  | 
		
					   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
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					   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
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					   at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd(Task task)
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					at MySqlConnector.Core.ConnectionPool.<GetSessionAsync>d__10.MoveNext() in C:\projects\mysqlconnector\src\MySqlConnector\Core\ConnectionPool.cs:line 72  | 
		
					   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
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					at MySqlConnector.Core.ConnectionPool.<GetSessionAsync>d__10.MoveNext() in C:\projects\mysqlconnector\src\MySqlConnector\Core\ConnectionPool.cs:line 141  | 
		
					   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
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					   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
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					at System.Threading.Tasks.ValueTask`1.get_Result()  | 
		
					at MySql.Data.MySqlClient.MySqlConnection.<CreateSessionAsync>d__109.MoveNext() in C:\projects\mysqlconnector\src\MySqlConnector\MySql.Data.MySqlClient\MySqlConnection.cs:line 645  | 
		
					   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
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					   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
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					at MySql.Data.MySqlClient.MySqlConnection.<OpenAsync>d__25.MoveNext() in C:\projects\mysqlconnector\src\MySqlConnector\MySql.Data.MySqlClient\MySqlConnection.cs:line 312  | 
		
					   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
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					   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
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					at MySql.Data.MySqlClient.MySqlConnection.Open() in C:\projects\mysqlconnector\src\MySqlConnector\MySql.Data.MySqlClient\MySqlConnection.cs:line 280  | 
		
					at MPP.SessionMgr.GlobalSessionSettings.GetDbSessionSettings() in C:\Users\ballenal\source\repos\mpp_web_2_0\SessionMgr\GlobaSessionSettings.cs:line 64  | 
		
					at MPP.SessionMgr.GlobalSessionSettings..ctor() in C:\Users\ballenal\source\repos\mpp_web_2_0\SessionMgr\GlobaSessionSettings.cs:line 25  | 
		
					at MPP.SessionMgr.SessionManager..ctor() in C:\Users\ballenal\source\repos\mpp_web_2_0\SessionMgr\SessionManager.cs:line 30  | 
		
					 
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					This exception was originally thrown at this call stack:  | 
		
					    [External Code]
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					    MPP.SessionMgr.GlobalSessionSettings.GetDbSessionSettings() in GlobaSessionSettings.cs
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					    MPP.SessionMgr.GlobalSessionSettings.GlobalSessionSettings() in GlobaSessionSettings.cs
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					    MPP.SessionMgr.SessionManager.SessionManager() in SessionManager.cs
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Attaching shared log from customers.
When I searched error messages, it seems to be fixed in mariadb server side - https://jira.mariadb.org/browse/MDEV-16308, but I am not sure if it is maxscale issue or server issue.