Setting fs.default.name in core-site.xml Sets HDFS to Safemode

Question

I installed the Cloudera CDH4 distribution on a single machine in pseudo-distributed mode and successfully tested that it was working correctly (e.g. can run MapReduce progr

Answer 1

The issue stemmed from domain name resolution. The /etc/hosts file needed to be modified to point the IP address of the machine of the hadoop machine for both localhost and the fully qualified domain name.

192.168.0.201 hadoop.fully.qualified.domain.com localhost