namenode -format does not read config file

1:~/hadoop$ Why namenode format does not read .xml configuration file and formats /tmp instead of /HDFS ? thanks for help! -- Fabio A. Miranda fabiomira...@ice.co.cr +506 8354.0324

Single setup documentation error

t v1.0 to extract fa...@nodo1:~/hadoop$ should I open a jira bug for this ? thanks for all the help, -- Fabio A. Miranda fabiomira...@ice.co.cr +506 8354.0324

fs.defaultFS value

UTDOWN_MSG: Shutting down DataNode at nodo1/192.168.1.11 / fa...@nodo1:~$ Anyone know where can I set fs.defaultFS to solve this error ? thanks, -- Fabio A. Miranda fabiomira...@ice.co.cr +506 8354.0324

RE: Cluster setup

Hello, > You don't need 4 machines. You can put everything on a single machine. That > is the easiest to get started. Once you have a cluster running on a single > machine then you can spread out over multiple machines. > Ok, but I don't understand what files exactly do I need to set up ?

Cluster setup

hello, I am trying to setup an Hadoop cluster. From the docs, it says I need two master: NameNode and Jobtracker and one slave: datanode, tasktracker. so, I need at least 4 machines to set up a cluster with hadoop ? How can I define the role of each machine if core-site.xml needs to be the same