Jps- NameNode,DataNode,SecondaryNameNode not running
Hadoop Jps : NameNode , DataNode and SecondaryNameNode are not running ,why ??
1. Delete all temp files .
rm –rf /tmp/*
2. Format namenode
3. Delete namenode and datanode folder
So process is to stop all the hadoop services. delete namenode and datanode data directories. Then format the namenode and start datanode.
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