Finds a file by size and hash.
For each file found:
This will search all fixed disks which is an expensive process and may take some time.
Currently files locked by some other process cannot be hashed and therefore cannot be reported as being found. This is not supported.
This will not search for files on remote machines.
This works slightly different on Windows and Non-Windows platform when the given file or folder, where file resides do not have any permissions assigned/available.
Windows platform does not report such locked down files whereas Non-windows does report the files irrespective of which level permission has been denied (file or folder). This happens because the tachyon.agent service runs as "root" (superuser)