On Wed, May 6, 2009 at 12:26 PM, Foss User <foss...@gmail.com> wrote:
> > Yes, as far as I remember but I am not absolutely sure. From your > reply, I understand what I experienced (may be due to my fault) is not > an expected behavior. So, if I face the same error again I would like > to provide more information to this list. What are the logs that I > should be uploading here for analysis if I see this again? > The output of the "namenode -format" command as well as the contents of your configuration file would be the relevant bits. And yes, it's not expected behavior. As you assumed, namenode -format is supposed to reformat the file system. This includes removing all files. If you are running namenode -format on an existing filesystem, you will see the following output: ************************************************************/ Re-format filesystem in /tmp/hadoop/dfs/name ? (Y or N) If you don't see that, you're formatting a directory that doesn't yet have a filesystem. -Todd
