title: Where are "queued" Azure Event Grid Blob trigger event messages stored and how can I clear them?
body: <p>Pardon if my terminology is a little off; I'm new to this.</p>
  
  <p>I have created an Azure Event Grid subscription which triggers an event whenever I upload a file to blob storage.  I have an Azure Function which responds to this event.  I've got this all working finally, but I have a slough of left-over messages from previous (bad) uploads that are failing periodically (as viewed from the Logs window in the Azure portal for the associated Azure Function).  It's as if they're stored in a queue somewhere and retried periodically, though I'm not sure if that's how it works.</p>
  
  <p>In any case, what I want to be able to do is purge any in-transit or queued events, but I don't know where to find them to do this.  As far as I know they're just floating about in the ether.</p>
  
  <p>How can I purge these events so they don't keep triggering my Azure Function at random times?</p>