DelayedMessagesPoller polls too often when no delayed messages are around

[timbussmann]

When enabling debug level logging, you'll notice that the DelayedMessagesPoller reports a polling attempt multiple times per second, even when no delayed message is around. Looking at the implementation, at first glance it doesn't look like the poller is supposed to behave that way and talking to @SeanFeldman confirmed that assumption further.

This has been brought up via support case from a customer noticing the polling attempts to his storage account. I've verified this behavior using the ASQ transport sample and changing the log level to debug.

ping @Particular/azure-maintainers

[Scooletz]

#326 provides a fix for it

[danielmarbach]

Fixed and released as part of 7.5.4 and 8.0.1

[gcobasmegia]

Hi Daniel,

Do we necessarily have to wait for NServiceBus 7.5.4 to apply this patch? or are we ok with just
using NServiceBus.Azure.Transports.WindowsAzureStorageQueue 8.0.1?

[danielmarbach]

@gcobasmegia

Sorry for the confusion. The version numbers you see above are for

NServiceBus.Azure.Transports.WindowsAzureStorageQueue 7.5.4
NServiceBus.Azure.Transports.WindowsAzureStorageQueue 8.0.1

so if you are on 8.0.0 upgrade to 8.0.1. Does that make things clearer?

[gcobasmegia]

Yes, very clear. Thanks a lot!