The error message below is logged continuously and producing an error log of +1GB:

Microsoft.ServiceBus.Messaging.ServerBusyException: The request was terminated because the entity is being throttled. Error code : 50002. Please wait 10 seconds and try again. ,

mysiteevents, Timestamp:7/20/2017 6:07:11 AM System.ServiceModel.FaultException`1[System.ServiceModel.ExceptionDetail]: The request was terminated because the entity is being throttled. Error code : 50002. Please wait 10 seconds and try again.

Server stack trace:

   at Microsoft.ServiceBus.Messaging.Sbmp.DuplexRequestBindingElement.DuplexRequestSessionChannel.ThrowIfFaultMessage(Message wcfMessage)

   at Microsoft.ServiceBus.Messaging.Sbmp.DuplexRequestBindingElement.DuplexRequestSessionChannel.HandleMessageReceived(IAsyncResult result)

Exception rethrown at [0]:

   at Microsoft.ServiceBus.Common.AsyncResult.End[TAsyncResult](IAsyncResult result)

   at Microsoft.ServiceBus.Messaging.Sbmp.DuplexRequestBindingElement.DuplexRequestSessionChannel.EndRequest(IAsyncResult result)

   at Microsoft.ServiceBus.Messaging.Channels.ReconnectBindingElement.ReconnectChannelFactory`1.RequestSessionChannel.RequestAsyncResult.b__4(RequestAsyncResult thisPtr, IAsyncResult r)

   at Microsoft.ServiceBus.Messaging.IteratorAsyncResult`1.StepCallback(IAsyncResult result)

Exception rethrown at [1]:

   at Microsoft.ServiceBus.Common.AsyncResult.End[TAsyncResult](IAsyncResult result)

   at Microsoft.ServiceBus.Common.AsyncResult`1.End(IAsyncResult asyncResult)

   at Microsoft.ServiceBus.Messaging.Channels.ReconnectBindingElement.ReconnectChannelFactory`1.RequestSessionChannel.EndRequest(IAsyncResult result)

   at Microsoft.ServiceBus.Messaging.Sbmp.RedirectBindingElement.RedirectContainerChannelFactory`1.RedirectContainerSessionChannel.RequestAsyncResult.<>c__DisplayClass17.b__a(RequestAsyncResult thisPtr, IAsyncResult r)

   at Microsoft.ServiceBus.Messaging.IteratorAsyncResult`1.StepCallback(IAsyncResult result)

Exception rethrown at [2]:

   at Microsoft.ServiceBus.Common.AsyncResult.End[TAsyncResult](IAsyncResult result)

   at Microsoft.ServiceBus.Common.AsyncResult`1.End(IAsyncResult asyncResult)

   at Microsoft.ServiceBus.Messaging.Sbmp.RedirectBindingElement.RedirectContainerChannelFactory`1.RedirectContainerSessionChannel.EndRequest(IAsyncResult result)

   at Microsoft.ServiceBus.Messaging.Channels.ReconnectBindingElement.ReconnectChannelFactory`1.RequestSessionChannel.RequestAsyncResult.b__4(RequestAsyncResult thisPtr, IAsyncResult r)

   at Microsoft.ServiceBus.Messaging.IteratorAsyncResult`1.StepCallback(IAsyncResult result).....

I do not remember writing any logic to handle the service bus queue.. Do you know of any "Retry Logic" at the Framework Level that is causing the server to be flooded with message requests to throttle ?

P.S - There was no Incident reported from azure regarding Azure Health. Our Test Environment in the same region was performing exceedingly well.