I set hadoop cluster follow chapter3-4 in Pro Hadoop. I use 4 machines; 1 master and 3 slaves , Ubuntu os , hadoop 0.19.2. I use command bin/hadoop namenode -format and bin/start-all.sh and jps will show namenode datanode jobtracker tasktracker secondarynamenode and jps . And in hadoop-site.xml I copy from book. But I running wordcount it cannot to run. I don't understand to confige file .xml. I need to configuration hadoop cluster step by step, please.
And how to configure all files in folder conf. I read from book and website apache but I don't understand to configure file in folder conf. And I think cause of error due to wrong configuration file in folder conf. Thank you.