java.lang.IllegalArgumentException: Does not contain a valid host:port authority: file:///

This happens when you have not configured "" in core-site.xml and attempt to start your NameNode without a proper hdfs://host:port schema. The default FS is file:/// and hence you see this.

Its always a better idea to use the Apache Hadoop HDFS mailing lists in case you are not sure its a bug, before reporting!

Please open core-site.xml file and add the property given below

In case of hadoop 1.x :

In case of hadoop 2.x :

Please let me know if you have any further issue regarding this.