Error on starting HDFS daemons on hadoop Multinode cluster.Datanode not starting

1
votes

I am trying to setup hadoop cluster and getting following error while connecting datanode.Namenode is up and running fine,however datanode is creating problem. /etc/hosts file is available on both the nodes. IP tables stopped(f/w). ssh happening.

2015-05-20 20:54:05,008 INFO org.apache.hadoop.ipc.Client: Retrying connect to server: nn1.cluster1.com/192.168.1.11:9000. Already tried 9 time(s); retry policy is RetryUpToMaximumCountWithFixedSleep(maxRetries=10, sleepTime=1 SECONDS) 2015-05-20 20:54:05,017 ERROR org.apache.hadoop.hdfs.server.datanode.DataNode: java.io.IOException: Call to nn1.cluster1.com/192.168.1.11:9000 failed on local exception: java.net.NoRouteToHostException: No route to host

1
hadoop
Could you ping to 192.168.1.11? – Rajesh N
Ping going to NN1.cluster1. Com I.e 192.168.1.11 however not able to ping dn1.cluster1. Com – shaheer01

1 Answers

1
votes

java.io.IOException: Call to nn1.cluster1.com/192.168.1.11:9000 failed on local exception: java.net.NoRouteToHostException: No route to host

This error occurs if you have firewall on namenode system. To disable firewall, type these commands in terminal.

service iptables save
service iptables stop
chkconfig iptables off

Now, stop and start the hadoop processess.