Hi, I have a question about the DFS capacity. Our cluster has 16 nodes, each has a 250GB hard drive. I use one node as the namenode, and other 15 as data nodes. However, from the webpage of http://localhost:50070, it is shown that each node has only 7.69 GB, and 2.75 GB remaining. I use the default "/tmp/hadoop-${user.name}" as the base directory (the first property in hadoop-default.xml). I tried in hadoop-site.xml to change this directory to my account directory "/home/${user.name}/hadoop", but only one node can be initialed as datanode, although I can see a more than 200 GB capacity for the node. Can anyone give some suggestion on how to make a larger space for DFS? Do I need an account with root authority?
Thanks! Huijun Zhu
