The description of output format is vastly outdated. It was changed after version 0.16.
$ hadoop fs -help ls -ls [-d] [-h] [-R] [<path> ...]: List the contents that match the specified file pattern. If path is not specified, the contents of /user/<currentUser> will be listed. Directory entries are of the form dirName (full path) <dir> and file entries are of the form fileName(full path) <r n> size where n is the number of replicas specified for the file and size is the size of the file, in bytes. -d Directories are listed as plain files. -h Formats the sizes of files in a human-readable fashion rather than a number of bytes. -R Recursively list the contents of directories.