LearningTransport: Delay QueueProvider while loop when there is an error to prevent massive log write when queues/folders are not yet fully initialized

Author: ramonsmits

src/ServiceControl.Transports.Learning/QueueLengthProvider.cs

@@ -39,6 +39,7 @@ protected override async Task ExecuteAsync(CancellationToken stoppingToken)
                 }
                 catch (Exception ex)
                 {
+                    await Task.Delay(5000, stoppingToken);
                     logger.LogWarning(ex, "Problem getting learning transport queue length");
                 }
             }