Event Hubs EventProcessingHost and partitioning over worker roles

Hi,

I have a question after reading the programming guide here:

https://msdn.microsoft.com/en-us/library/azure/dn789972.aspx

My understanding is that if I'm using multiple worker roles on the same event hub, the EventProcessorHost guarantees that a single machine is processing a single partition at any given time. If a checkpoint is made, then the partition might be moved to be processed on another machine, but in-between checkpoints, all the work for a particular node is done on the same machine.

Is my understanding correct?

Thanks,

Andy