There are 0 datanode(s) running and no node(s) are excluded in this operation

Question

I have set up a multi node Hadoop Cluster. The NameNode and Secondary namenode runs on the same machine and the cluster has only one Datanode. All the nodes are configured o

Answer 1

I had same error. I had not permission to hdfs file system. So I give permission to my user:

chmod 777 /usr/local/hadoop_store/hdfs/namenode
chmod 777 /usr/local/hadoop_store/hdfs/datanode