private static class TPath.TPathComparator
extends Object
implements Comparator<TPath>

The methods in this class use TPath.getAddress().FsPath.getMountPoint() as an identifier for the file system in order to avoid creating the TFileSystem object for a TPath. Creating the file system object usually creates an FsController too, which is an expensive operation. This may cause some unwanted FsMountPoint parsing when a TPath object is just used for resolving another TPath object.