I found the information about filebeat live_reloading in the following URL:
https://www.elastic.co/guide/en/beats/filebeat/current/_live_reloading.html
And it states "When the files found by the Glob change, new prospectors and/or modules are started and stopped according to changes in the configuration files."
What's meaning? suppose I started a filebeat instance, and there is just one log file to watch, so there is one original prospector would be created and running, then I changed the config file, so based on description in the URL, the filbeat would create a new prospector , right ? So there are two prospectors running and dealing with the same log file in the same time ? The original prospector wouldn't be stopped automatically when the new prospector created?