MirrorX, Try out adding hostname of your master and slave system also to /etc/hosts/ That fixed same error for me.
master-> 127.0.0.1 localhost6.localdomain6 localhost 127.0.1.1 localhost4.localdomain4 master-pc 192.168.7.110 master master-pc 192.168.7.157 slave lab-pc slave-> 127.0.1.1 localhost5.localdomain5 lab-pc 127.0.0.1 localhost3.localdomain3 localhost 192.168.7.110 master master-pc 192.168.7.157 slave lab-pc Arun -- View this message in context: http://lucene.472066.n3.nabble.com/network-configuration-etc-hosts-tp3602798p3605901.html Sent from the Hadoop lucene-users mailing list archive at Nabble.com.
