1. Its amabari alerts framework which is creating the ticket as it, does a regular health check by connecting to HS2 using beeline. beeline needs a ticket to connect to HS2. 2. The frequency is every 2 minutes. 3. HiveServer2 always generate TGT in memory and never on disk_cache. 4. Even if you delete the ticket your HS2 will work fine. 5. If you have more than one HiveServer2 you will see the ticket is being generated only one of the instances.