Writing to HDFS from Java, getting “could only be replicated to 0 nodes instead of minReplication”

Question

I’ve downloaded and started up Cloudera\'s Hadoop Demo VM for CDH4 (running Hadoop 2.0.0). I’m trying to write a Java program that will run from my windows 7 machine (The same

Answer 1

Go to linux VM and check the hostname and iP ADDRESS(use ifconfig cmd). Then in the linux vm edit /etc/host file with

IPADDRESS (SPALCE) hostname

example : 192.168.110.27 clouderavm

and change the all your hadoop configuration files like

core-site.xml

hdfs-site.xml

mapred-site.xml

yarn-site.xml

change localhost or localhost.localdomain or 0.0.0.0 to your hostname

then Restart cloudera manger.

in the windows machine edit C:\Windows\System32\Drivers\etc\hosts

add one line at the end with

you vm machine ip and hostname (same as you done on the /etc/host file in the vm)

VMIPADRESS VMHOSTNAME

example :

192.168.110.27 clouderavm

then check now, it should work, for detail configuration check following VIDEO from you tube

https://www.youtube.com/watch?v=fSGpYHjGIRY