title: How to define overlapping hopping windows in Esper using EPL?
body: <p>How can I define an overlapping tumbling window as EPL query in Esper? I'm looking for equivalent of hopping windows similar to these: </p>
  
  <p><a href="https://docs.microsoft.com/en-us/stream-analytics-query/hopping-window-azure-stream-analytics" rel="nofollow noreferrer">https://docs.microsoft.com/en-us/stream-analytics-query/hopping-window-azure-stream-analytics</a> </p>
  
  <p>For example: 1 second hopping window with 500ms overlap.</p>
  
  <p>Esper's reference manual describes <a href="http://esper.espertech.com/release-7.1.0/esper-reference/html/epl-views.html" rel="nofollow noreferrer">tumbling windows</a> and overlapping context, but how can I express it as a query?</p>
  
  <p>Thank you.</p>