I have several DNN 5.1.1 Community Edition systems running in production. One of them seems to be having trouble with the BroadcastPollingCachingProvider. Specifically, the Poll method is throwing an exception.
In looking as my system, I've noticed that the Servers table has not shown any activity for quite some time and the Broadcasts table is backing up. Also, there were references to my non production servers (leftover fromstaging) and not all of my production servers were lists.
So I made the command decision to clear the broadcasts and servers tables and restart the webfarm. The website works, but no entries were made in the servers table. Note, there are current entries in the WebServers table.
It seems that this one system doesn't seem to think that BroadcastPollingCachingProvider is enabled?
In trying to isolate the issue, I went into the 5.1.1 source code and can find no reference to the BroadcastPollingCachingProvider. Was this removed? Is there some other setting somewhere that I need to check?
I do have the BroadcastPollingCachingProvider task running in the scheduler (it always fails).
The system that is not working was upgraded from 4.9.x, the system that is running was installed clean as a 5.0.0 system.
Any help / insight would be greatly appreciated.