Are you able to ping the other node with the configured hostnames? Make sure that you should be able to ping to the other machine with the configured hostname in ect/hosts files.
Regards, Uma ----- Original Message ----- From: praveenesh kumar <praveen...@gmail.com> Date: Sunday, October 16, 2011 6:46 pm Subject: Re: Too much fetch failure To: common-user@hadoop.apache.org > try commenting 127.0.0.1 localhost line in your /etc/hosts and then > restartthe cluster and then try again. > > Thanks, > Praveenesh > > On Sun, Oct 16, 2011 at 2:00 PM, Humayun gmail > <humayun0...@gmail.com>wrote: > > we are using hadoop on virtual box. when it is a single node then > it works > > fine for big dataset larger than the default block size. but in > case of > > multinode cluster (2 nodes) we are facing some problems. > > Like when the input dataset is smaller than the default block > size(64 MB) > > then it works fine. but when the input dataset is larger than the > default> block size then it shows ‘too much fetch failure’ in > reduce state. > > here is the output link > > http://paste.ubuntu.com/707517/ > > > > From the above comments , there are many users who faced this > problem.> different users suggested to modify the /etc/hosts file > in different manner > > to fix the problem. but there is no ultimate solution.we need the > actual> solution thats why we are writing here. > > > > this is our /etc/hosts file > > 192.168.60.147 humayun # Added by NetworkManager > > 127.0.0.1 localhost.localdomain localhost > > ::1 humayun localhost6.localdomain6 localhost6 > > 127.0.1.1 humayun > > > > # The following lines are desirable for IPv6 capable hosts > > ::1 localhost ip6-localhost ip6-loopback > > fe00::0 ip6-localnet > > ff00::0 ip6-mcastprefix > > ff02::1 ip6-allnodes > > ff02::2 ip6-allrouters > > ff02::3 ip6-allhosts > > > > 192.168.60.1 master > > 192.168.60.2 slave > > >
