Clearing Client Queues
You can remove all the documents from a queue by clearing it. You might want to clear a queue in the following situations:
You are testing the client and want to resume testing with an empty client queue.
A client published invalid documents and it is more efficient to clear the queue than locate and delete the individual invalid documents.
A subscriber connection no longer exists. After moving the queue contents to another client's queue for processing, you can clear the documents from the original queue.