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

1) Stop all services first using command stop-all.sh

2) Delete all files inside datanode rm -rf /usr/local/hadoop_store/hdfs/datanode/*

3) Then start all services using command start-all.sh

You can check if all of your services are running using jps command

Hope this should work!!!