Minor Description
The help message for the command "hdfs dfs -help df" is displayed like this:
"-df [<path> ...]: Shows the capacity, free and used space of the filesystem.
If the filesystem has multiple partitions, and no path to a
particular partition is specified, then the status of the root
partitions will be shown."
and the information about df -h option is missed,despite the fact that df -h option is implemented.
Therefore,the expected message should be displayed like this:
"-df [-h] [<path> ...]: Shows the capacity, free and used space of the filesystem.
If the filesystem has multiple partitions, and no path to a
particular partition is specified, then the status of the root
partitions will be shown.
-h Formats the sizes of files in a human-readable fashion
rather than a number of bytes."