This is weird issue.
I have almost 4-7 Edge Server Pointing to Origin server.
While loading HLS stream, some times Edge Server returns Empty HLS list.
Here is empty list
HTTP/1.1 200 OK Accept-Ranges: bytes Server: WowzaStreamingEngine/4.2.0 Cache-Control: no-cache Date: Thu, 20 Apr 2017 18:46:24 GMT Content-Type: application/vnd.apple.mpegurl Content-Length: 25 #EXTM3U #EXT-X-VERSION:3
Any kind of hint/clue, where to debug or how to debug, would be a great help.
I tried my all possible ways.