Implementation

The FST garbage collector basically runs in a loop. On each iteration the garbage collector does the following:

1. Queries the MGM for the list of all EOS filesystems
2. Creates the list of local EOS file systems by discarding all those that are not on the same host as the garbage collector
3. Runs the garbage collection decision and execution logic on each physical file found within each of the local EOS file systems
4. Sleeps a while