title: Time triggered azure functions only run on one instance
body: <p>I understand that timer triggered azure function doesn't scale, so I created multiple such functions, hopefully can solve the scale issue. but what I found out is that all those functions always run on the same instance, 2 others are idle all the time. </p>
  
  <p>when I had only one timer triggered function, all instance run it in rotation. </p>
  
  <p>btw, I am using azure function slot.</p>
  
  <p>Thanks.
  Lidong</p>